Estimate a 25% tip on a bill of $89.27 by first rounding the ball amount to the nearest ten dollars

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

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute