Pre-Algebra Review

Exponents

100

y³(y⁴)

y⁷

200

x⁵*x^?=x¹⁶ What is the ?

11

300

4^-5

1/4⁵

^{or 1/1024}

400

5⁰

1

500

(x^-4 * x²)^-5

x¹⁰

Inequalities

100

14x<784

x<56

200

-2x+22<18

x>2

300

-3.4x<17

x>-5

400

19-2(1-x)<13

x<-2

500

4(1.1y+2.75)> -6.6

y>-4

Equations

100

-4y=32

y=-8

200

6x-5 = 2(3x+4)

No solution

300

x/5+9=20

x=55

400

-3k+4 = -2-6k

k= -2

500

−8(−8x − 6) = −6x − 22

x= -1

Two-Step

100

Bob buys a TV for $335. He makes a down payment of $50 and pays the rest in 6 equal monthly payments. Write an equation to represent Bob's relationship with buying the TV.

6x+50=335

200

Write an equation for three fewer than one fourth of x is 12.

1/4x-3=12 or x/4-3=12

300

A pet iguana cost $45.99. You currently have $14.87 but plan to save $6 each week. Write an equation to represent how many weeks it will take you before you will have enough money to buy the iguana.

6x+14.87=45.99

400

11.61-1.29x=20

x=-6.50385797 or about -6.5

500

-1/4(24x-16)=28

x=-4

Math Class

100

an inequality sign needs to be switched when?

Multiplying or Dividing by a negative

200

-4x+3>11

x<-2

300

4⁵*4³/4¹⁰ simplify

4^-2 or 1/4²

400

8x+24=-2(-4x-12)

Infinity many solutions

500

5(2x + 6) = −4(−5 − 2x) + 3x

x=10