Substitution into Algebraic Expressions

Three times a number increased by nine

• 3h-9

• 3(h-9)

• 3(h+9)

• 3h+9

Solve the equation: 
x + 7 = 12

• x = 5

• x = 19

• x = -5

• x = 84

the sum of fifty-two and a number

• n-52

• 52 + n

• 52/n

• 52n

Choose the phrase that matches the expression   21h

• 21 more friends than expected at the party

• 21 more horses in the pasture

• 21 dollars per hour

• 21 balloons were popped at the party

Simplify the Expression: 10x - 3(2x + 8)

• 4x - 24

• -4x + 24

• 16x - 24

• 14x - 6

Simplify the Expression: 5(x + 2) + 2x

• 7x + 2

• 7x + 10

• 5x + 4

• 7x + 7

Simplify: -5x + 1

when x = 12

• 59

• -59

• 60

• -60

Simplify: 13 - 4x

when x = (-8)

• -19

• -45

• 45

• The answer is not here.

Simplify: 6x + 2m

when x = 14 and m = (-9)

• 66

• -66

• 102

• 13

• 10

• 76

• -12

• 12