Is (-3,11) a solution to the system of equation shown below.
x-3y=36
3x+4y=48
explain your answer .

Answer for 10 points show work you guys in advanced < 3

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.