The sale price of a dress is 7/10 of its regular pr ice. the sale price of a dress is 44.80 the equation 7/10r equals 44.80 can be used to find yhe regular prce r in dollars of the dress dertermine wherther requals 31. requals 52 or requals 64

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

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!

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are