5 shirts for $21
the 6 deal would be $4.25 for each shirt
4 deal would be $4.50 for each shirt
and the 5 deal is the cheapest because its $4.20 for each shirt
so you're going to need to find the slope. in order to do that use (y2-y1)/(x2-x1)
(7-(-2))/(0-8)
simplify
9/-8
simplify -9/8
now using y=mx+b, we need to find b. so we can plug in the coordinates of (0,7) or (8,-2). let's use (8,-2) because it involves more math.
y=mx+b
-2=(-9/8)(8)+b
multiply (-9/8) by 8 to get -9
-2=-9+b
add 9 to both sides
7=b
so our equation is now
y=-(9/8)x+7
(-3/1) * (1/-3) = 1
Hope this helped! Please mark brainliest if this helped at all. Have a great rest of your day!
The question is asking that X times 38% will equal to 247. So we set up the equation:
Then, we multiply both sides by
and we get the answer is
650
