Solve the system.5x + 5y + z = -53x - 5y - z = -355x + y + 2z = -12
A. (-5, 5, 3)
B. (-5, 3, 5)
C. (5, 3, -5)
D. No solution
Answer: B
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Solve the problem.On a business trip, Jon must drive from his office to a clients's office, a distance of 224 miles. He sets off a 8 a.m. Suppose that he drives at a constant speed of 69 mph. Express the function f(t) that gives his distance from the client's office at time t hours (with t = 0 corresponding to 8 a.m.)
A. f(t) = 224 + 69t
B. f(t) = 69t
C. f(t) = 224 - 69t
D. f(t) = 224 - 
Use Cramer's rule to solve the linear system.
A. x = 8, y = 3, z = 8 B. x = 3, y = -8, z = -3 C. x = 3, y = 8, z = 3 D. x = 4, y = 6, z = 3
Determine the slope and y-intercept of the function.f(x) = - 9x - 
A. m = - 9; b = - 
B. m = - 
; b = - 9
C. m = 9; b = 
D. m = - 
; b = 
Find all natural numbers that can replace b and make the expression factorable.8x2 + bx - 5
A. 3, 6, 18, or 39 B. 9, 18, 27, or 36 C. 3 or 6 D. 6, 18, or 39