When sarah was 6 6 months old she was 21 inches tall and had a diameter of 4.5 inches. Now at 20 years old, she is 6 feet tall 1 inch and her head diameter is 7.65 inches is this considered similar

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: both chords and diameters have two endpoints on a circle. diameters must intersect the center of a circle.

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .