Determine a formula for the exponential function.
A. f(x) = 4 ? 1.1x
B. f(x) = 3.6 ? 0.9x
C. f(x) = 4 ? 0.7x
D. f(x) = 4 ? 0.9x
Answer: D
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Decide whether or not the following is a statement.Do you like this color?
A. Statement B. Not a statement
The concentration of a drug in grams/cubic centimeter (g/cm3) t minutes after it has been injected into the bloodstream is given by 
where w, p, and k are positive constants, with p> w.
?
At what time is the concentration of the drug the greatest? What will be the concentration of the drug in the long run?
?
A. 
B. ?
C. ?
D. ?
Solve.Find the simple interest when: Principal = $1488, Rate = 22%, Time = 8 months.
A. $2618.88 B. $327.36 C. $218.24 D. $26,188.80
Select the graphs of the equations 
and approximate any solutions of the system of linear equations.
A. 
B. 
C. 
D. infinitely many solutions
E. no solution