You can rent time on computers at the local copy center for a a $ 7 setup charge and an additional $ 3.50 for every 10 minutes. how much time can be rented for $ 22?

Computer can be rented for  42.85 minutes using $22

Step-by-step explanation:

Given:

Setup charge =  $ 7

Additional charge for every 10 minutes = $ 3.50

To find:

The time for which the computer can be rented for  $ 22

Solution:

Let the additional time be x

for  additional charge for 10 minutes =3.50

for 1 minute , additional charge = = $0.35

According to the question

setup cahrge + additional charge= $22

x=42.85

what "following statement"?

step-by-step explanation:

hello from mrbilldoesmath!

answer:

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

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

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

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb