Algebraic Expressions and Substitution

Evaluate -2x  if     x = 10

• -8

• 20

• -20

Evaluate expression: 5a + b for a= 6 and b= 3

• 33

• 36

• 30

• 59

Find the value of this expression if c = 4
14 + 3c² - 15 + c

• 37

• 51

• 41

• 121

The difference of h and 9 divided by 3.

• h-9/3

• (h-9)/3

• (9-h)/3

• 9-h/3

The product of 7 and j increased by 3.

• 3+7j

• 7j-3

• 7(j+3)

• 3j+7

Five times Mike's age increased by 9

• 5(x+9)

• 9(5+x)

• 9x+5

• 5x+9

You traveled 52 miles. Then, your avg rate is 12 mph. What algebraic expression models the distance?

• 52+12/h

• 12/h-52

• 12h+52

• 12-52

Evaluate expression:
½a - 5b
when a= -12 and b= -3

• -21

• -9

• 9

• 21

What is the value of
xy + 2z,
when x = -2, y = 4 and z = -5

• -2

• 28

• 18

• -18

Simplify: 6x + 2m

when x = 14 and m = (-9)

• 66

• -66

• 102

• 13