Graph the function. Show at least one period.y = 5 cos
A. 
B. 
C. 
D. 
Answer: A
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Find the surface area of the circular solid. Unless otherwise specified, use 3.14 for ? and round your answer to the nearest tenth.A right circular cylinder with d = 16 m, h = 5.3 m
A. 668.2 m2 B. 1065.1 m2 C. 535.1 m2 D. 334.1 m2
Graph the linear function.g(x) = 
x - 6
A. 
B. 
C. 
D. 
Solve.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 3 B. 11 C. -11 D. -3
Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. How long will it take for the population of a certain country to double if its annual growth rate is 5.1%? Round to the nearest year.
A. 14 yr B. 39 yr C. 1 yr D. 6 yr