The length of a rectangle is shown below:

if the area of the rectangle to be drawn is 90 square units, where should points c and d be located, if they lie vertically below a and b, to make this rectangle?

c(4, −5), d(−3, −5)
c(5, −4), d(−4, −4)
c(5, −5), d(−4, −5)
c(−5, 5), d(−5, −4)

C(5,-4), D(-4,-4)

Have a great day :)

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!

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4