What is the y-intercept for the equation -2x + 5y = -10a. (0,5)b. (0,-5)c. (0,2)d. (0,-2)

Which system of linear inequalities is graphed? can somebody pleasssse

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

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r