Lola rode her bike for 7/10 of an hour on saturday and 3/5 of an hour on sunday. how much longer did she ride her bike on saturday than sunday?

Lola ride for of an hour extra on Saturday as compared to Sunday

Step-by-step explanation:

Given: Lola rode her bike for of an hour on saturday

and for of an hour on sunday

Therefore difference of the two rides time

⇒-

Multiplying and dividing

⇒

⇒ of an hour

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!

a

step-by-step explanation: