You have $135 in a saving account and save $12 per week. Your friend has $95 in a savings account and saves $20 per week. How many weeks will it take for you and your friend to have the same balance?

It will take 5 weeks for you and your friend to have the same balance.

Step-by-step explanation:

Let x be the number of weeks.

Total money saved = Money in saving account + (Money saved per week)×(Number of weeks)

For you, Total money saved = 135 + 12x

For your friend , Total money saved = 95 + 20x

W hen they have equal amount int heir account , then

So, it will take 5 weeks for you and your friend to have the same balance.

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation: