Solving Equations
Domain and Eange
Solving systems by Elimination
Exponent Rules
Expotential Equations
100

-4x=24

A=20

B=-20

C=6

D=-6

D=-6

100

X-(-4,-3,-2,-1,0,1,2)

Y-(7,6,5,4,3,2,1)

Domain: {-4, -3, -2, -1, 0, 1, 2}

Range{1,2,3,4,5,6, 7}

100

Solve by elimination:
4x+9y=28
-4x-y=-28

A (-7,0)

B (6,0)

C (-6,0)

D (7,0)

D (7,0)

100

5x9.-6x2

      (.) Multiplication^

A -30x11

B -30x18

C -x11

D -x18

A -30x11

100

y=a(b)x   In an exponential function, what does the 'a' represent? 


Y-Intercept

150



Solve: 6(5x - 3) + 2 = 14


A 2

B 5

C -1

D 1



D 1

150

For the function {(0,1),(1,-3),(2,4),(4,1)}, write the domain and range.

D: {1,-3,4}

R:{0,1,2,-4}


D:{0,1,2,-4}

R:{1,-3,-4}


D:{0,1,2,3,4}

R:{1,-3,-4}

Correct Answer: 

D:{0,1,2,-4}

R:{1,-3,-4}

150

Solve by elimination:
3x+7y=23
-3x-7y=-17


No solution
ARN
(-3,3)
(3,3)


No solution

150

(-15x2yz4)0

A -15x2yz4

B 1

B 1

150

What is a, the starting term, for the function: f(x) = 300(1.16)x?

300

200

Solve: 

2(2x + 3) = -6(x + 9)

A 1.2

B 6

C -6

D 7.5

C -6

200

Which set of coordinates describe a function?

A {(2,4),(-2,7),(6,2),(-2,8)

B {(7,2),(3,9),(3,10),(-1,7)}

C {(7,-4),(3,-3,),(2,-2),(7,-8)

D {(6,3),(-6,4),(4,0),(1,2)}

D {(6,3),(-6,4),(4,0),(1,2)}

200

Solve by elimination:
-9x-4y=-20
5x+4y=4

A (-4,4)
(4,4)
C (4,-4)
D (-4,-4)

C (4,-4)

200

15y2 . (2y)3


A 120y5
B 120y5
C 30y5
D 30y6


A 120y5

200

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

y=15(1.35)x

250

Solve:
4x + 5x = 27

A 27

B 3

C -27

D 0

B 3

250

X  Y              What is the range shown in this table?

1  -7

2  -5

3   3

4   7

5   2

(-2,3,7)

250

Solve by elimination:
4x+4y=4
3x+4y=10

A (7,-6)
B (-6,7)
C (6,7)
D (7,6)


B (-6,7)

250


Simplify

y10/y-5



y15


250

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

y=5000(0.7)x
300

Solve

x/6 = 5

A 30

B 5/6

C 36

D 9

A 30

300

Identify the range of the following relation:

x -6 0 2 4

y 14 32 38 44 

A {-6, 14, 2, 28}
B {-6,14, 0, 32, 2, 38, 4,44}
C {-6, 0, 2, 4}
D {14, 32, 38, 44}


D {14, 32, 38, 44}
300

Solve by elimination:
-x+2y=17
2x+2y=-10


A ARN
B (-9,4)
C (-9,-4)
D (9,-4)

B (-9,4)

300


Rewrite using a positive exponent.

2w-13



2/w13

300

20x7/10x5

2x2

350


Solve:
x/4 + 9 = 11


A 8

B 2

C .5

D -8

A 8

350

What is the range of this relation?

(–8,–3)

(–3,–8)

(–1,6)

(4,2)

A{-3,2,6,8}       C{-8,-3,2,6}

B{-8,-3,-1,4}    D{-3,2,6}

C{-8,-3,2,6}

350

Solve by elimination
4x-6y= -6
-2x-12y= -12

A (0,1) 

B (1,0)

C (1,1)

D (2,1)

A (0,1)

350


Simplify:
(2x4y5)(-3x2y7)



-6x6y12

350


Simplify the following exponential expression:
(3x4)(5x3)



15x7

400

Solve:

 -7/8 = m - 3/8.

A -5/4

B 1/2

C -1/2

D 5/4

C -1/2

400

What is the domain of this relation?

(–4,4)

(8,–1)

(9,–9)

(1,2)

(1,8)


A {-4,1,8,9}   C {-4,1,2,8,9}

B {-9,-4,1,8}  D {-9,-1,2,4,8}

A {-4,1,8,9}

400

Solve by elimination
2x+9y= -7
6x-3y= 9 

A (-1, -1) 

B (2,-1)

C (1,1)

D (1,-1)

D (1,-1)

400


Simplify.
s-5 ⋅ s-2



1/s7

400

(2x2y4)3

8x6y12

450

Solve:
2(2t - 3) = 6(t + 2)


t=9
t=4
t=-9
t=-3


t=-9

450

What is the range of this relation?

(8,9)

(2,6)

(–9,0)

(7,–7)

(7,–8)

A {-8,-7,2,6,9}       C {-8,-7,0,6,9}

B {-9,2,7,8}           D {-9,0,6,7,9}



 C {-8,-7,0,6,9}

450


Solve by elimination
-6x+y= -2
-3x-6y= 12


A (2,0)

B no solution 

C (0,-2)

D infinite solutions 

C (0,-2)
450


Simplify:  8(x4)1/2


8x2

450


Which is an exponential function?

A y = mx + b

B y - y1 = m(x - x1)

C y = abx

C y=abx

500

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2


A The student found an incorrect common denominator
B The student did not multiply all terms by the common denominator
C The student did not use opposite operations appropriately
D The student did not correctly eliminate the variable from one side of the equation


B  The student did not multiply all terms by the common denominator

500

What is the range of this relation?


(–5,8)

(–6,2)

(2,5)
(–2,8)
(2,–6)

A{-6,2,5,8}  C{-6,-2,2,5)

B{-6-5,5,8}  D{-6,-5,-2,2}





A{-6,2,5,8}

500

Solve by elimination
-12x-10y= 0
 6x+5y= -1

A infinite solutions

B (0,0)

C no solution 

D (2,1)

C No solution

500

Simplify: (s2r-4)(s6r-2)  

s8/r6
500

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.


y=6(1.14)x