Find the equation and sketch the graph of the function.A quadratic function with x-intercepts (-2, 0) and (- 4, 0) and y-intercept (0, 8). 
A. y = x2 + 6x + 8
B. y = x2 + 6x - 8
C. y = x2 + 6x - 8
D. y = x2 + 6x + 8
Answer: A
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Solve the problem.The average cost of a 4-year college education is projected to be $100,000 in 16 years. How much money should be invested now at 1%, compounded quarterly, to provide $100,000 in 16 years?
A. $100,000.00 B. $96,083.74 C. $72,643.91 D. $85,231.40
Solve the problem. Round to the nearest cent.Bicycles are often on sale in September. The regular price of one bicycle is $181.95. With a 25% discount, what is the sale price of the bicycle?
A. $135.96 B. $44.99 C. $45.49 D. $136.46
Rationalize the denominator.
A. 
B. 
C. 
D. 
Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
A) x = 5, y = –2, z = –6
B) x = 2, y = –5, z = 6
C) x = –2, y = –5, z = 6
D) no solution
E) x = 2, y = 5, z = 6