Answer:
B. $4.75
Step-by-step explanation:
3(4) + 7 = 19
19/4=4.75
Abd is a right angled triangle so by pythagoras we know

and to calculate h we need to use the sine rule

i hope this helps
Answer:
Part A: [0,2], Part B: [2, 4], Part C: [8,10], Part D: 0 ft
Step-by-step explanation:
Part A: The time between 0 seconds to 2 seconds is the time when it's increasing. There is no other time like that.
Part B: The graph shows a straight line so therefore it is staying the same.
Part C: The graph shows a sharp decline.
Part D: Starting from the 10th second, the balloon already hit to ground so it would only make sense for it to stay there...
Answer:
The last one.
Step-by-step explanation: