Answer:
3.69 hours
Step-by-step explanation:
y = 80.25x + 78.75
y = 95.75 + 40
85.25x + 78.75 = 95.75 + 40
-85.25x -40 -85.25x -40
38.75/10.5 = 10.5x/10.5
3.690476190..... = x
rounding
3.69 = x
Answer:
![43.13 = 5.25h + 9](https://tex.z-dn.net/?f=43.13%20%3D%205.25h%20%2B%209)
Step-by-step explanation:
Let's solve this by making an equation.
$9 for the helmet, and $5.25 per hour.
h will stand for hours, C will stand for Amanda's cost.
![C = 5.25h + 9](https://tex.z-dn.net/?f=C%20%3D%205.25h%20%2B%209)
Now, substitute in what we learned from the problem.
![43.13 = 5.25h + 9](https://tex.z-dn.net/?f=43.13%20%3D%205.25h%20%2B%209)
This is an equation you can use to solve for the hours.
Reason number 1 (before) is that you could contaminate your samples if you have foreign material on your hands.
Reason number 2 (after) is that you could spread<span>/or ingest dangerous chemicals or substances that you have handled in the lab.</span>
The sum of exterior angles of a convex polygon is 360°.
.. 6x +(x +16) +(3x -1) +5x = 360
.. 15x +15 = 360 . . . . . . . . . . . . . . collect terms
.. x +1 = 24 . . . . . . . . . . . . . . . . . . divide by 15
.. x = 23
<span>So you would subtract 12 from both sides to get 60 equals 4x. Divide both sides by 4, and you get x=15. So she has sold 15 shirts. </span>