Acell phone plan has a monthly cost that is shown in the table below. what is the correct statement regarding the average rate of change during the 40-minute time of talk?
a. the average rate of change is $1.00, meaning that for every ten minutes of talk time, the monthly bill increases by $1.00.
b. the average rate of change is $1.00, meaning that for each minute of talk time, the monthly bill increases by $0.10.
c. the average rate of change is $0.10, meaning that for every ten minutes of talk time, the bill increases by $0.10.
d. the average rate of change is $0.10, meaning that for each minute of talk time, the monthly bill increases by $0.10.

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.