This is 7th grade math and answer asap. tell me which answer choice in q.5. i will gave brainliest, thx, and 5 star if answered right.

The volume of a rectangular prism is found by multiplying the length, width, and height of the prism. a rectangular prism has a width of 5x^2units, a length of 7x^3 units and a height of 2x^4 units. which is the volume of the prism in terms of x?

Melody received $140 at the end of a certain week. how many customers did she advise that week?

Ethan purchased a container of sports drink that contains 300 calories. the label says that 80% of the calories are from carbohydrates. how many calories are from carbohydrates?