Which phrase describes the algebraic expression 7/8y-3
1)seven-eighths of a number minus three
2)the quotient of eight-sevenths and three
3)the product of seven-eighths and three
4)the sum of seven-eighths of a number and three

the answer is su.k.my? ? co.kc

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: c

(2, -4)

goes 7 to the

(9, 4)

easy