If a pyramid has a height of 10 in. and a base with an area of 90 in² , what is the volume of the pyramid?

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

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?