1. Given that

Calculate6

Calculate-8

Calculate ?

Calculate ?

All the answers i got for (f*g) and (f/g) are wrong??

2. A space traveler is moving from left to right along the curve

When she shuts off the engines, she will continue traveling along the tangent line at the point where she is at that time. At what point

(x,y) should she shut off the engines in order to reach the point ?

If she was traveling from right to left she would have to shut off the engines at the point (x,y)?

3. If an arrow is shot straight upward on the moon with a velocity of 78 m/s, its height (in meters) after t seconds is given by .

What is the velocity of the arrow (in m/s) after 7 seconds?66.38 m/s

After how many seconds will the arrow hit the moon?94 seconds

With what velocity (in m/s) will the arrow hit the moon? ??(How do i calculate for this?)