Frances has 4 square baking dishes. each pan is 7 inches × 7 inches × 2 inches. which expression will give her the total volume of all the pans? a. 7^2 × 2 b. 7 × 2^4 c. (7 × 2 × 2) × 4 d. (7^2 × 2) × 4

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: an 8-foot rope is tied from the top of a pole to a

stake in the ground, as shown in the diagram

below

step-by-step explanation: