Writing Expressions

Select the correct expression for the following:

19 fewer than a number

• n-19

• 19-n

• n+19

• 19n

Select the correct expression for the following:

The sum of a number and 24.

• n-24

• 24n

• 24-n

• n+24

Select the correct expression for the following:

Ten times the difference of a number and 7.

• 10n-7

• 10(n-7)

• 70n

• 10(n+7)

Nigel has a car detailing business. He charges $50 per car along with a $20 travel fee. Write an expression for the cost of detailing c cars.

• 100c

• 50c + 20c

• 50(c+20)

• 50c+20

True/Fasle:

The expression w-10 can also be written as 10-w.

• True

• False