Find the x-intercepts (if any) for the graph of the quadratic function.f(x) = 2 + 3x + x2
A. (1, 0) and (-2, 0)
B. (-1, 0) and (2, 0)
C. (1, 0) and (2, 0)
D. (-1, 0) and (-2, 0)
Answer: D
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Solve the problem.The regular price of a blanket is $25.50. During a November sale, the blanket was selling for 20% off the regular price. What was the sale price of the blanket? Round to the nearest cent.
A. $20.40 B. $19.90 C. $5.10 D. $4.60
Solve using Cramer's Rule.Linear systems occur in the design of roof trusses for new homes and buildings. The simplest type of roof truss is a triangle. The truss shown in the figure is used to frame roofs of small buildings. If a 109-pound force is applied at the peak of the truss, then the forces or weights W1 and W2 exerted parallel to each rafter of the truss are determined by the following linear system of equations. Solve the system to find W1 and W2. 
W1 + 
W2 = 218 
style="vertical-align: -4.0px;" />W1 - 
W2 = 0
A. W1 = 97.73 lb; W2= 79.79 lb
B. W1 = 79.79 lb; W2= 97.73 lb
C. W1 = 109 lb; W2= 133.5 lb
D. W1 = 39.9 lb; W2= 48.86 lb
Factor the trinomial, or state that the trinomial is prime.7x2 + 31x + 20
A. (7x + 5)(x - 4) B. (7x - 4)(x + 5) C. prime D. (7x + 4)(x - 5)
Write the expression in standard form.
? 
A. -63 B. 63 C. 63i2 D. -63i