Write each sentence as an equation or inequality. Use x to represent any unknown number. S...

Write each sentence as an equation or inequality. Use x to represent any unknown number. See Example 9.

EXAMPLE 9   Write each sentence as an equation or inequality. Let x represent the unknown number.

a. The quotient of 15 and a number is 4.

b. Three subtracted from 12 is a number.

c. Four times a number, added to 17, is not equal to 21.

d. Triple a number is less than 48.

Solution

The difference of sixteen and four is greater than ten.