Solve the problem.Suppose a life insurance policy costs $28 for the first unit of coverage and then $7 for each additional unit of coverage. Let C(x) be the cost for insurance of x units of coverage. What will 10 units of coverage cost?
A. $70
B. $98
C. $42
D. $91
Answer: D
Mathematics
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You administer a 0.9% saline solution to a patient. Write this percent as an equivalent decimal number and as a reduced fraction.
A. 0.09; 
B. 0.0009; 
C. 0.9; 
D. 0.009; 
Mathematics
Solve.How long will it take for the population of a certain country to double if its annual growth rate is 6.4%? Round to the nearest year. Use the exponential growth model P(t) = P0ekt.
A. 5 yr B. 1 yr C. 11 yr D. 31 yr
Mathematics
Simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
y
Mathematics