Multiply and simplify. 3xy4z2⋅5x2yx 15x4y5z2 8x4y5z2 15(xyz)11 15x2y4z2

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate