Solve the problem.Find and simplify f(a + 4), given f(x) = x2 + 2.
A. a2 + 6
B. a2 + 8a + 16
C. a2 + 16
D. a2 + 8a + 18
Answer: D
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Test the vector field F to determine if it is conservative.F = x3y3z3i + x3y3z3j + z3k
A. Conservative B. Not conservative
Two dice are rolled. Find the probability of the event described.The score on the dice is 7.
A. 
B. 
C. 
D. 
Solve the problem.The size of the bear population at a national park increases at the rate of 
per year. If the size of the current population is 105, find how many bears there should be in 6 years. Round to the nearest whole number.
A. 137 bears B. 139 bears C. 141 bears D. 143 bears
Solve for the requested variable.Your company uses the quadratic model y = -4.5x2 + 150x to represent the average number of new customers who will be signed on (x) weeks after the release of your new service. How many new customers can you expect to gain in week 22?
A. 3201 customers B. 1122 customers C. -528 customers D. 561 customers