Determine the amplitude and range of the function and sketch its graph.y = -3 cos 
x
A. amplitude: 3; range: [-3, 3]
B. amplitude: 3; range: [0, 3] 
C. amplitude: 
; range: (-?, ?)
D. amplitude: 3; range: [-3, 3]
Answer: D
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Use a TVM slover to find the APR (true annual interest rate), to the nearest 0.01%, for the loan. Use the Annual Percentage Rate table if necessary.
PurchaseDown Payment Add-on# of Payments PriceInterest Rate $5000$5005%24
A. 8.59% B. 8.96% C. 9.10% D. 9.32%
Graph the parabola.y2 = 5x
A. 
B. 
C. 
D. 
The percent P of the drug triazolam (a drug for treating insomnia) remaining in a person's bloodstream after t hours is given by 
. What percent will remain in the bloodstream after 12 hours? Round to the nearest hundredths.
?
A. 0.97 % B. 8.25 % C. 0.03 % D. 7.20 % E. 2.73 %
Provide an appropriate response.Why is the slope of a vertical line undefined?
What will be an ideal response?