Factor completely. If the polynomial cannot be factored, write "prime."x4 + 4x3 + 7x2 + 28x
A. x(x2 + 7)(x - 4)
B. (x2 - 7)(x2 + 4x)
C. x(x + 4)(x2 + 7)
D. Prime
Answer: C
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Determine whether the equation is a function.y2 = 5 - x2
A. function B. not a function
Solve the problem.Some people must eat a low-sodium diet with no more than 2000 mg of sodium per day. By eating 1 cracker, 1 pretzel, and 1 cookie, a person would ingest 149 mg of sodium. If a person ate 8 pretzels and 8 cookies, he or she would ingest 936 mg of sodium. By eating 6 crackers and 7 pretzels, a person would take in 535 mg of sodium. Which of the following statements is true?
A. A cracker contains 30 mg of sodium. B. A cracker contains more sodium than a cookie C. A pretzel contains 49 mg of sodium. D. A cookie contains 71 mg of sodium.
Use a graphing calculator to solve the system of equations. Round your solutions to one decimal place.
A. {(1.0, 3.4, -2.8)} B. {(0.2, 0.8, -0.7)} C. {(0.5, 1.7, -1.4)} D. {(2.0, 6.8, -5.7)}
Provide an appropriate response.A prime number has exactly 
factor(s).
A. 3 B. 1 C. 0 D. 2