Solve for n: d=3m+7n

14. Of the 400 students in the 8th grade, four- fifths have purchased tickets for the end of year trip. If there needs to be two chaperones for every 75 students, how many chaperones are needed?

Kate has $60 in a savings account that earns 5% annually. The interest is not compounded. How much will she have in 1 year?

Is - 5 3/8 rational I can't figure it out

The solutions of a quadratic equation are 5 and - 1. What is the factored form of a related quadratic function? a) f (x) = (x + 5) (x - 1) b) f (x) = (x + 5) (x + 1) c) f (x) = (x - 5) (x - 5) d) f (x) = (x - 5) (x + 1)

Hannah has only nickels and dimes in her wallet. She has a total of $2.50 and a total of 30 coins how many nickels does she have using system of equations?

How do you subtract and reduce 9 - 2 over 5

What is the opposite of the opposite of - 3/8

Write b/bc in simplest form

What value completes the square for the expression? x2 - 18x A. 9 B. - 9 C. 81 D. - 81

A right rectangular prism has a height of 15 in, and the area of the cross section taken parallel to the base at a level of 5 in above the base is 25 in2.