Solve the equation.
- 4 = 
A. {4}
B. no solution
C. {4, -4}
D. {-4}
Answer: B
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There are initially 37 milligrams per deciliter of a drug in the bloodstream of a patient. The concentration of the drug shows a constant percentage decay of 6% per hour. ? A: Using C for the concentration, in milligrams per deciliter, of the drug after t hours, write a formula for C. ? B: What is the percentage decrease in concentration over any 4-hour period? ? C: Make a graph that shows the drug concentration over the first 20 hours. ? D: How long will it take for the concentration to decline by 24%? ? Round your answers to two decimal places if necessary. ?
What will be an ideal response?
Use the fundamental identities and appropriate algebraic operations to simplify the expression.
A. sec x B. -sec x C. 1 D. csc x
Simplify.(4p3s2)2(s3)
A. 16p5s12 B. 16p6s7 C. 16p5s7 D. 4p6s7
Solve the problem. Round your answer to the nearest cent.John Lee's savings account has a balance of $774. After 4 years, what will the amount of interest be at 4% compounded semiannually?
A. $123.84 B. $63.80 C. $131.47 D. $132.86