Give the maximum number of zeros the polynomial function may have. Use Descarte's Rule of Signs to determine how many positive and how many negative zeros it may have.f(x) = -2x5 + x3 - x2 + 3
A. 5; 2 or 0 positive zeros; 3 or 1 negative zeros
B. 5; 2 or 0 positive zeros; 2 or 0 negative zeros
C. 5; 3 or 1 positive zeros; 2 or 0 negative zeros
D. 5; 3 or 1 positive zeros; 3 or 1 negative zeros
Answer: C
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Solve the system using matrices. x - y + 3z = -8 x + 5y + z = 405x + y + 13z = 10
A. (8, 8, 0) B. Infinitely many solutions C. (8, 0, 8) D. No solution
Use a calculator with a 
key to solve the problem.The function f(x) = 90e-0.2x + 10 models the percentage of information, f(x), that a particular person remembers x weeks after learning the information. a) Substitute 0 for x and, without using a calculator, find the percentage of information remembered at the moment it is first learned. b) Find the percentage of information that is remembered after 4 weeks. Round to the nearest thousandth of a percent.
A. a) 10%; b) 10.449% B. a) 50%; b) 210.299% C. a) 90%; b) 40.440% D. a) 100%; b) 50.440%
Graph the function as a solid curve and its inverse as a dashed curve.f(x) = x3 + 1 
A. 
B. 
C. 
D. 
Solve the problem.Jen's Cycle Shop performs maintenance on and sells bicycles and has eight employees who are paid weekly. For one payroll period the withholding tax for all employees was $1713. The total Social Security tax withheld from employees' paychecks was $1690, and the total Medicare tax withheld was $395. What is the total tax that must be deposited by Jen?
A. Employer's tax deposit = $5288 B. Employer's tax deposit = $3798 C. Employer's tax deposit = $5883 D. Employer's tax deposit = $4193