Tickets to a play cost $8 each. write an expression that gives the ticket cost in dollars for a group of g girls and b boys

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

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?