two competing sports equipment suppliers sell footballs at different prices. Supplier A charges in shipping, and chargers 2.59 per football. Supplier B charges in shipping, and charges 4.29 per football. A school wants to buy 40 balls. Which supplier has the lowest average cost per ball?

i dont understand the question? ?

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm