Whoever answers all first, and in at the most, five minutes, will get brainliest. please answer all.

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

Nikita wants to apply for student aid to fund her college education. arrange the steps involved in nikita’s application for financial aid