Vocabulary
There are r rows of chairs with 9 chairs in each row. Choose the expression that shows the number of chairs in total.
A)9÷r B) 9 + r C) 9r
What is C) 9r
8x+2x=15x-10
A.)-2
B.) 0.4
C.) 2
D.) 5
C.) 2
True or false.
-4 is a rational number
Ben had c caramels. Then, Ben's sister took 34 of the caramels. Choose the expression that shows the number of caramels Ben has left.
A) 34 - c B) c - 34 C) c + 34
What is B) c - 34
8c+5=4c-11
A.)4 B.) 2 C.)-4 D.) 6
C) -4
-3x + 6 = -3x + 9
6 = 9
No solution
Ture or false
These numbers are in ascending order:
80/67, 54%, 2/5, .23
False
Descending order
Name a number without a variable.
What is a constant
331 students went on a field trip. Six buses were filled and 7 students traveled in cars. Which equation will allow you to find how many students were in each bus?
What is 6b+7=331
100+x=50+51x
A.)-1 B.)1 C.)-2 D.)2
B) 1
-5x + 10 = -5x + 10
10= 10
infinitely many solutions
What type of decimal is this 5.767676...?
Repeating decimal
What is the number in front of the variable called?
5x + 7 = 8x - 9
Coefficient
You bought a magazine for $8 and 6 erasers. If you spent a total of $11, then how much did each eraser cost?
What is $0.50
8+6x=11
4y+y+1=7(y-1)
A.) -4
B.)-3
C.)3
D.)4
D.) 4
-8x + 10 = -2x + 34
x= -4
What type of decimal is this .75?
Terminating decimal
What must you do first in this problem?
-9x + 5 = 7x + 2 -3x
Combine like terms
Taxi company A charges $8.00 to get into the cab and $0.75 per mile. Taxi company B charges $6.00 to get into a cab and $1.25 per mile. How many miles would the cost be the same for both companies?
What is 4 miles
8+.75x=6+1.25x
w+3=w+6
A.) 3 B.) no solution C.) W=0 D.) 5
B.) No solution
5(2x-7)= 10x -35
-35 = -35
infinitely many solutions
True or false pi is a rational number.
False