Find the area of each rectangular prism. Pls help

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Asphere has a diameter of 10 in. what is the volume of the sphere?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?