Simplify expression 7-8x+9x

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

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83