Hannah's school hosted a book donation. There are 150 students at her school, and they donated a total of b books! Hannah donated 3 times as many as the average number of books each student donated. How many books did Hannah donate?

Write a numerical expression that satisfies all of the following conditions. 1.)the only number used in the expression is 5 2.)at least one exponent other than 1 is used 3.)when the expression is evaluated, the answer is greater than 40 and less than 50

Abcd is a parallelogram. the diagram is not drawn to scale. if m

What is 20+(5 x 2/5 )+ 3 show your work