Answer:
$478.56
Step-by-step explanation:
12*40=480
.003(.3%)*480=1.44
480-1.44=$478.56 after taxes.
X-y=7
y=3x+12
y-3x=12
+
-y+x=7
=
-2x=19
x=-9.5
y=-16.6. Hope it help!
There's only one solution...the one you get when you divide both sides by 22 to solve for x. 902/22 = 41. That exponent on the x, the one you don't see, is a "1" which tells us that there is only 1 solution to this problem. If your x is squared, then you have 2 solutions; if it's cubed, you have 3, etc.
