Justin bought some chocolate, 3 lollipops, and some bubble gum at the candy store. Pieces of chocolate cost $0.15 each, lollipops cost $0.25 each and pieces of bubble gum cost $0.50 each. If I represents the number of chocolate pieces he bought, and g represents the number of pieces of bubble gum he bought, which expression represents the amount of money Justin spent at the candy store? O A 0.15 +0.25(3) +0.509 OB. 0.151 +0.25(3) +0.500 O C 0.15 0.25(3) * 0.509 O D. 0.15-0.25(3) - 0.50g​

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

the answer is d on edge

step-by-step explanation:

answer: im gonna go with milli

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