Martina wants to earn more than $80 selling ice cream cones. She has already earned $24. Let x represents the number of ice cream cones to be sold at $2 each. Which statement represents how
many more ice cream cones Martina needs to sell to earn more than $80?
A x > 28
B x = 28
C x < 28
D xs 28

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation:

pls refer ro the top for answer