If 18pounds of fertilizer will cover 1,570 square feet of lawn how many pounds are needed for 6,280 square feet

72lbs of fertilizer

Step-by-step explanation:

Simply divide and multiply.

6280/1570 is 4. If 18 pounds covers 1570 then you’ll need to multiply 18 by 4 to get the amount of pound you need.

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: translate the circles so they share a common center point and dilate circle y by a scale factor of 3.