Find an equation of variation in which y varies directly as x and the following is true.y = 0.9, when x = 0.5
A. y = 
x
B. y = 
x
C. y = 
D. y = 0.9x
Answer: A
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Solve the problem.A developer wants to build 10 houses each of a different design. In how many ways can she decide which houses will be on the north side of the street and which on the south side if 3 of the 10 houses are to be on the north side and the remainder on the south side?
A. 1000 B. 6 C. 720 D. 120
Solve the equation by factoring.x2 - 11x = -24
A. {8, 3} B. {-3, -8} C. {-8, 8} D. {-3, 8}
Solve the polynomial inequality and graph the solution set on a number line.x3 + 2x2 - 10x + 25 ? 0
A. (-?, -5] ? [5, ?)
B. [-5, ?)
C. (-?, -5] ? [-3, 5]
D. (-?, -5]
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.y = 7
A. y-intercept: (0, 7), m: 0
B. y-intercept: (0, 0), m: 7
C. y-intercept: (0, 0), m: 
D. y-intercept: (7, 0), m: undefined