1. Mike has coffee worth $4 per pound that he wishes to mix with 20 pounds of
coffee worth $7 per pound to get a mixture that can be sold for $5 per pound,
How many pounds of the cheaper coffee should he use?

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

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?