Can someone please help me?

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Evaluate the following expression 1/3^2

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191