Find the volume of the square prism measuring 6km along each edge of the base and 5 km tall (no units)

Which of the following exponentially equations is equivalent to the logarithmic equation below?

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.

Mary and roberto bought identical backpacks at different stores. mary's backpack originally cost $65 and was discounted 25%. roberto's backpack originally cost $75 and was on sale for 30% off on the original price. which backpack was the better buy?