Airline fares for a flight from Dallas to Austin are $30 for first class and $25 for tourist class. The flight had 52 passengers who collectively paid $1360.

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

560

step-by-step explanation:

giggidy

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

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