Acompany designed two rectangular maps of the same region. these maps are described below.

map 1: the dimensions are 8 inches by 10 inches. the scale is 3/4 mile to 1 inch.

map 2: the dimensions are 4 inches by 5 inches.

which ratio represents the scale for map 2?

a. 1/2 miles to 3/4 inch

b. 3/4 miles to 1/2 inch

c. 1/4 mile to 1 inch

d. 3/4 mile to 2 inches

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.

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!