Finding Solution of Expressions

Write a variable expression to represent the phrase: The product of 72 and some number y.

• 72 + y

• 72 - y

• 72y

w increased by 5

• w - 5

• 5w

• w + 5

• w / 5

Choose all that apply!!

Triple the sum of 12 and 14

• 3 + (12 + 14)

• 3 x (12 + 14)

• 3 x 12 + 14

• (12 + 14) x 3

Three times a number increased by nine

• 3h-9

• 3(h-9)

• 3(h+9)

• 3h+9

Evaluate 8a - b     if a = 10   and   b = 6

• 74

• 38

• 1000

• 9000

• 1

• 2

• 3

• 4

Evaluate when a = 15:
2(a - 5) + 2

• 22

• 27

• 14

• 7

The difference of a number and 1

• 1 - x

• x - 1

• 1x

• -1x

Which of the following expressions contains the variables x, y, and z?

• 4x + 6y + 10z

• 4x + 6y

• 4x + 10z

• 6y +10z