If a = 3x^2 + 5x - 6 and b = -2x^2 - 6x + 7, then a - b equals
(1) -5x^2 - 11x + 13 (3) -5x^2 - x + 1
(2) 5x^2 + 11x - 13 (4) 5x^2 - x + 1

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

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

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)