Ravi buys a coat for $86.40, which includes an 896 sales tax. Which equation could be used to find the cost of the coat, c,
without the sales tax?
Choose all that apply.

A. c+0.08=86.40

B. 1.08c=86.40

C. 0.92 x 86.40 = c

D. 0.92c = 86.40

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

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!

answer: i literally just answered this question but they want me to do it again

step-by-step explanation: