Evaluate. 2^5/2^3
a) 1
b) 28
c) 4
d) 8

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

What is the number 321,000,000 in scientific notation? also what is the number? ?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers