4) A-1 Plumbing charges a $60 service fee plus $25 per hour. Martin's Plumbing charges a $75 service fee plus $15 per hour. For how many hours will both companies charge the same amount?

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Which graph represents the function g(x) = |x + 4| + 2?