Substitution and Evaluate

If a=4,b=5 and c=6,find 2c-a-b

• 4

• 3

• 6

When x = 3, y = 6 and z = 7, find 2x - z

• -1

• -2

• -3

• -4

If p=3 and q=5,find 
p +q+2

• 12

• 10

• 8

If a=2,b=3,c=4 and d=5,find a+b+c+d

• 14

• 12

• 15

Evaluate u + xy, for u = 18 , x = 10 , and y = 8.

• 188

• 36

• 98

• 224

If a = 3, b = 4, what is 2a + 3b?

• 15

• 16

• 17

• 18

If m = 3 & n = 7, what is 5m - 2n?

• 1

• 6

• 12

• 29

If s = 3 & t = 9, what is 2t - 3s?

• 8

• 9

• 10

• 11

If x = 5 & y = 3 what is 3x + 5y?

• 28

• 30

• 32

• 34

replacing a variable with a number or expression

• equivalent fractions

• substitution

• evaluate

• equivalent expressions

• similar figures