If the temperature of a container of gas remains constant, how could the pressure of the gas increase? A: If the temperature of a container of gas remains constant, how could the pressure of the gas increase?

B: The size of the container increases.

C: The number of gas molecules in the container increases.

D: The mass of the gas molecules increases.

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

this is answer of 144 cubic meters

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.