PLEASE HELP ASAP WILL MARK BRAINLIST Amy's school is 4 miles from her house. Jane lives between Amy's house and the school. After school, Amy walked for 40 minutes at a constant rate to get to Jane's house. The girls stayed at Jane's house for half an hour, then Amy borrowed Jane's bike and rode home at a constant rate. She arrived home 1 1/2 (one and one half) hours after school ended.
Part A. Assume Amy rides her bike faster than she walks. Use the grid below to graph a function representing Amy's trip.

Part B. Describe which sections of the function are increasing and which are decreasing.

answer: 7270

step-by-step explanation:

1 and 0

step-by-step explanation:

answer: c. is your answer

step-by-step explanation: get me a black leather coat

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)