S=p-0.15p represents the sale price s of an item with an original price p, after a 15% discount. make a table to find the discount prices for items with originall prices of $12, $16, $20 and $25

1ST you do 12 divided by 100 = 0.12 then you multiply 15. 0.12 x 15 = 1.80 then you do $12-$1.80= $10.80. You get 15% is $1.80 off the original price. So $12 with the discount would be $1.80. S= $12-0.15*1.80

$16 with the discount would be $ 2.40.

$20 with the discount would be $ 3.00

$25 with the discount would be $  3.75

I hope that helps.

I am sorry if it is wrong.

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!