Henry counted 350 lockers in his school. hayley counted 403 lockers in her school. how does the 3 in 350 compare to the 3 in 403?

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

Ineed in figuring out this problem.

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2