A printer prints 28 photos in 8 minutes. How many minutes does it take to print 21 more photos?

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

For what value of (y) is 3^3/3^y =1/9

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?