2x + 3y = 1240
x = 2y - 10

Step-by-step explanation:

2x + 3y = 1240       and    x = 2y - 10

so:

                 +20         +20

                       ÷7       ÷7

x/3-10=8

x/3=18

x=48

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb