The product of 8 and quantity 9 less than c is less than 13

According to the given statement,

8 * (9 - c) < 13

Divide each side by 8.

9 - c < 13/8

Subtract 9 from each side.

-c < 13/8 - 9

-c < - 59/8

Multiply each side by - 1.

c > 59/8, or c > 7.375

Answer:

c > 59/8 (or c > 7.375).