Johns coffee shop makes a blend that is a mixture of two types of coffee. type a cost 4.05 per lb. and type b cost 5.60 per lb. this month john made 142 lbs of the blend for a cost of 655.70. how many lbs of type a did he use

The verbal translation for the difference of m and 7 increased by 15

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps