Help, can anybody solve the below

What is the value of x in the following equation. -x ^3/2 = -27

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

Which value of y will make the inequality y< -1 false?