Visa charges merchants roughly 10 cents plusa 1.5% transaction fee. If a store sets a minimum purchase of $10 before they accept Visa, and all you want to buy are some
$0.50 candy bars (including tax), how many must you buy in order to use your Visa
card?

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180

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

25/14 or 1.

step-by-step explanation:

the dots mean that it has infinitely more numbers behind it