Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 11
- 4x
A. 15
B. 11
- 4x
C. 7x
D. 7x
Answer: C
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Solve.John drops a ball from the top of a 256 foot building. The height, h, of the ball in feet t seconds after being dropped is given by h = -16t2 + 256. When will the ball hit the ground? (Hint: The height of the ball when it hits the ground will be 0.)
A. The ball will hit the ground when t = 4 sec. B. The ball will hit the ground when t = 17 sec. C. The ball will hit the ground when t = 16 sec. D. The ball will hit the ground when t = 64 sec.
Round the number to the nearest ten, nearest hundred, and nearest thousand.8019
A.
| Ten | 8020 |
| Hundred | 8100 |
| Thousand | 8000 |
B.
| Ten | 8020 |
| Hundred | 8000 |
| Thousand | 8000 |
C.
| Ten | 8010 |
| Hundred | 8100 |
| Thousand | 9000 |
D.
| Ten | 8010 |
| Hundred | 8000 |
| Thousand | 8000 |
Add or subtract as indicated. If terms are not like radicals and cannot be combined, so state. Assume all variables represent nonnegative real numbers.
+ 
A. cannot be combined
B. 2
C. 
D. 
Solve the problem.If $8000 is invested at interest rate i, compounded quarterly, it will grow in 4 years to an amount A, in dollars, given by A = 8000
16. Find the rate of change, 
.
A. 
= 128,000
16
B. 
= 128,000
15
C. 
= 32,000
16
D. 
= 32,000
15