17) A merchant imports a TV set for $1000 and pays 30% taxes. If he sells the TV set to make a profit of $500, the selling price is
(A) $1300
(B)$1500
(C)$1800
(D)$2000

answer: a.

step-by-step explanation: the answer is a. because, you need to converge the fractions to find a solution.

answer: it's upside down and i can't read it

step-by-step explanation:

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!