The cost to rent a car is $39.50 plus $0.25 per mile. if you only have $80, what is the greatest number of miles that you can drive?

162 miles

Step-by-step explanation:

p= 0.25m +39.50

80- 39.50 = 40.50

40.50/ 0.25 = 162

exactly you go it

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