Write the first six cube of natural number​

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.