Determine the real solutions to the system of nonlinear equations.4x2 + y2 = 164x2 - y2 = 16
A. (2, 0), (-2, 0)
B. (4, 0), (-4, 0)
C. (0, 4), (0, -4)
D. (0, 2), (0, -2)
Answer: A
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Solve the problem.Suppose you would like to cross a 222-foot wide river in a boat. Assume that the boat can travel 33 mph relative to the water and that the current is flowing west at the rate of 7 mph. If the bearing is chosen so that the boat will land at a point exactly across from its starting point, how long will it take for the boat to make the crossing? Give your answer to the nearest second.
A. 2 sec B. 9 sec C. 19 sec D. 5 sec
Solve for I: P = I2R
a. ÚÄÄ I = ûPR b. R I = Ä P c. ÚÄ ³R I = ³Ä ûP d. ÚÄ ³P I = ³Ä ûR e. R I = Ä R
Solve the problem.The table shows the number of deaths due to car accidents in a certain city in various years. 
Let f(t) be the number of deaths due to car accidents at t years since 2012. Suppose that you wish to model f using a quadratic equation. What is the vertex of the model? What does it mean in this situation?
A. (0, 202); the smallest number of deaths due to car accidents was 202 in 2012 B. (2, 261); the largest number of deaths due to car accidents was 261 in 2014 C. (3, 270); the largest number of deaths due to car accidents was 270 in 2015 D. (5, 219); the smallest number of deaths due to car accidents was 219 in 2017
For the given function f(x), find f-1(x). State the domain of f-1(x).f(x) = (x + 16)2 - 5 (x ? -16)
A. f-1(x) = 5x2 + 16, x ? 0
B. f-1(x) = 
+ 5, x ? -16
C. f-1(x) = 
- 16, x ? -5
D. f-1(x) = 
+ 16, x ? 5