Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set. x - 5y = -56x - 4y = -4
A. Cramer's rule does not apply since D = 0; ?
B. {(1, 0)}
C. {(0, 1)}
D. {(-1, 0)}
Answer: C
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Write the point-slope form of the line satisfying the conditions. Then use the point-slope form of the equation to write the slope-intercept form of the equation in function notation.Passing through (-10, -45) and (8, 27)
A. f(x) = 4x - 5
B. f(x) = - 
x - 
C. f(x) = 
x - 
D. f(x) = -4x - 85
Solve the problem.The table shows the prizes and probabilities of winning (on a single $1 ticket) for a particular state lottery. Find the expected value of the winnings for a single lottery ticket. 
A. -$0.79 B. -$0.75 C. $0.21 D. -$0.84
Find the slope of the curve for the given value of x.y = x2 + 11x - 15, x = 1
A. slope is - 
B. slope is 13
C. slope is -39
D. slope is 
Use the discriminant to determine the number and nature of the solutions to the quadratic equation. Do not solve the equation.4x2 + 6x + 8 = 0
A. two real solutions B. exactly one real solution C. two nonreal solutions