Rachel has scored 30, 29, 30, and 19 points in her four basketball games so far. how many points does she need to score in her next game so that her average (mean) is 27 points per game?

27

Step-by-step explanation:

30+29+30+19 + x = 27*5

answer: check all that apply, where the options?

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!