If possible, solve each system by an algebraic method (substitution or addition method). Otherwise, state that the problem has no solution or an infinite number of solutions. y - 3x = 43y = 9x + 12
A. Infinite number of solutions
B. (-1.5, -1)
C. No solution
D. (1, 1)
Answer: A
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Solve the problem.The cross section of a piece of a roller coaster having a width of 260 feet and a depth of 125 feet is depicted below.
What is the equation of this parabola?
A. y = 
x2
B. y = 
x2
C. y = 
x2
D. Not enough information
Determine the quadratic function whose graph is given.
Vertex: (- 1, 4)y-intercept: (0, 3)
A. f(x) = x2 - 4x + 3 B. f(x) = -x2 - 2x - 3 C. f(x) = -x2 - 4x + 3 D. f(x) = -x2 - 2x + 3
Solve the problem.The length and width of a rectangle have a sum of 78. What dimensions give the maximum area?
A. Length 38 and width 40 B. Length 29 and width 49 C. Length 30 and width 48 D. Length 39 and width 39
Write the system of equations associated with the augmented matrix.
A. x = 8 y = 6 z = 0 B. x = 0 y = 0 z = -6 C. x = -1 y = 1 z = 7 D. x = 1 y = -1 z = -7