A parking garage charges $2 for the first hour and $1 for each additional hour. Fran has $7.50 to spend for parking. What is the greatest number of
hours Fran can park?

Thus, Fran parked for 6.5 hours and payed 7.5 dollars.

Step-by-step explanation:

Find the number of greatest hour did Fran used for parking in where:

=> parking charge $2 for the first hour

=> and $1 for the additional hours.

=> Fran spent $7.5 in all.

To get the answer let’s have the solution this way.

=> 7.5 dollars – 2 dollars = we need to subtract the first hour which is 2 dollars.

=> 5.5 dollars left.

=> 5.5 dollars / 1 dollar per hour

=> 5.5 hour + 1 hour

=> 6.5 hours

Thus, Fran parked for 6.5 hours and payed 7.5 dollars.

13.46

step-by-step explanation:

16.80 x .20 = 13.46

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)