Solve the problem.Matthew has saved a total of $19,200, of which $4800 is invested in the stock market. What percent of his total savings is invested in the stock market?
A. 20%
B. 25%
C. 30%
D. 35%
Answer: B
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If a skydiver jumps from an airplane, his velocity v, in feet per second, starts at 0 and increases toward a terminal velocity of 
feet per second. The difference 
is an exponential function of time.
? A: What is the initial value of D? ? B: For each second that passes, D decreases by 17%. What is the one-second decay factor for D? Round your answer to two decimal places if necessary. ? C: Find an exponential formula for D. Use t for the number of seconds since the skydiver jumped. ? D: Find a formula for v. ? What will be an ideal response?
Use the vectors in the figure below to graph the following vector. 
z - v 
A. 
B. 
C. 
D. 
Solve the problem.The magnitude and direction of two forces acting on an object are 35 pounds, 
, and 55 pounds, 
respectively. Find the magnitude and the direction angle of the resultant force. Round the magnitude to the nearest hundredth of a pound and the direction angle to the nearest tenth of a degree.
A. 
= 43.30; ? = 2.7°
B. 
= 57.04; ? = -23.6°
C. 
= 49.17; ? = -11.3°
D. 
= 65.19; ? = -7.5°
Solve the problem.A cab ride costs $1.70 base plus $0.90 a mile. How far can you go for $13.40?
A. 16 miles B. 14 miles C. 15 miles D. 13 miles