Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the leading coefficient a of x2 should be positive or negative.The amount of water in a pool as it is being filled, as a function of time.
A. linear; negative
B. quadratic; positive
C. linear; positive
D. quadratic; negative
Answer: C
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Solve the problem.A rectangular garden measures 20 feet by 40 feet. The landscaping designed a concrete walkway to go around thisrectangular garden. In the diagram below, this concrete walkway is x feet wide. The entire concrete walkway covers 544 square feet in area. What is the width of x of this concrete walkway? 
A. 8 feet B. 2 feet C. 4 feet D. There is not enough information given.
Factor f(x) into linear factors given that k is a zero of f(x).f(x) = x3 - 4x2 - 25x + 100; k = 5
A. (x - 5)(x - 4)(x + 5) B. (x - 5)(x - 4)(x + 4) C. x(x - 5)(x - 4) D. (x - 5)(x + 4)(x + 5)
Determine which size is the best buy.9 oz for $1.444
oz for $1.53
A. 4
oz
B. 9 oz
C. Equal value
D. Not enough information
Simplify using the rules for exponents.
3
A. 
B. 
C. 
D. 