It is -16
-1/8c=2
2/-1/8=2 X-8/1=-16
If you rearrange x - y = 2 into slope-intercept form,
x - y = 2
+ y
x = 2 + y
- x
0 = 2 + y - x
- 2
-2 = y - x
+ x
y = -2 + x
you get y = -2 + x, which means that the y-intercept is -2. I hope this helps!
I came up with 114.48. i think you meant bill is $90, not o0%
For question 11, you essentially need to find when h(t) = 0, since that is when the height of the ball reaches 0 (ie touches the ground).
For question 12, it is asking for a maximum height, so you need to find when dh/dt = 0 and taking the second derivative to prove that there is maximum at t. That will find you the time at which the ball will hit a maximum height.
Rinse and repeat question 12 for question 13
