Tim had 2b books for sale at a price of k dollars each. if y is the number of books he did not sell, which of the following represents the total dollar amount he received in sales from the books?

a. k(2b-y)
b. k(y-2b)
c. ky - 2b
d. 2b - ky
e. 2bk - y

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?