What is the equivalent exponential expression for the radical expression
below?
А. 8^1/2
B. 8^2
C. 8
D. 4

Really need on these. i have no idea what to do

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.

Mila's dog weighs 4 pounds more than 8 times the weight of keiko's dog. which expression could be used to fine te weight of mila's dog?