Answer:
My work keeps getting deleted because apparently I am not aloud to share a graph link but I can try to message you it.
Step-by-step explanation:
I can explain it, though. To find it, you must know where the points are! If you know that, i think you're good to go :D
<span> 8x/7+9=30 </span><span>
x = 147/8 = 18.375</span>
Cost of 1 pack of trading cards = xTotal packs purchased = 10Cost of 10 packs before discount (A) = 10 * xDiscount percentage = 20 %Discount amount per pack = (20/100) * xDiscount amount for 10 packs (B) = (20/100) * x * 10Cost of 10 packs after discount is (A) - (B) = (10 * x) - ((20/100) * x * 10)Simplifying, we get x * (10 - 200/100) = x * (10 - 2) = x * 8 = 8 * xCost of shipping = $3.99Total cost of 10 packs of trading cards after discount and including cost of shipping can be represented by the algebraic expression 8 * x + 3.99 or 8x + 3.99
To sub
solve for 1 variable
solve for x
minus 6y both sides on second equotn
x=18-6y
sub 18-6y for x in other equation
2(18-6y)-3y=-24
36-12y-3y=-24
36-15y=-24
minus 36 oth sides
-15y=-60
divide -15 both sides
y=4
sub back
x=18-6y
x=18-4(4)
x=18-16
x=2
x=2
y=4
(2,4)