Solve the problem.Two sound waves, producing the pressures 
and 
combine on a person's ear drum to produce the pressure 
Graph P in 
by 
and use the graph to estimate values for a and k so that
src="https://sciemce.com/media/4/ppg__rrr0629191325__f1q25g6.jpg" alt="" style="vertical-align: -4.0px;" />Round k to the nearest ten-thousandth, if necessary.
A. a = 5; k = 808.6467
B. a = 2.2; k = 0.9273
C. a = 2.2; k = 808.6467
D. a = 5; k = 0.6435
Answer: D
Mathematics
src="https://sciemce.com/media/4/ppg__rrr0629191325__f1q25g6.jpg" alt="" style="vertical-align: -4.0px;" />Round k to the nearest ten-thousandth, if necessary.
A. a = 5; k = 808.6467
B. a = 2.2; k = 0.9273
C. a = 2.2; k = 808.6467
D. a = 5; k = 0.6435
Answer: D
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Graph the pair of parametric equations in the rectangular coordinate system.x = 4 tan t, y = 5 sec t; 0 ? t ? 2? 
A. 
B. 
C. 
D. 
Write the number in scientific notation.409,000
A. 4.1 × 105 B. 4.1 × 10-5 C. 4.1 × 10-6 D. 4.1 × 106
Solve.Randy invested his inheritance in an account that paid 
interest, compounded continuously. After 8 years, he found that he now had 
. What was the original amount of his inheritance?
A. $23,006.94 B. $34,859 C. $35,859.00 D. $33,859.00
Determine whether the system of equations is consistent or inconsistent. If the system is consistent, determine whether the equations are dependent or independent.
A. Independent B. Dependent C. Inconsistent