Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
Answer: B
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Solve.The thickness of an airport runway's pavement is determined by the weight of the planes using it. The relationship between runway thickness x, in inches, and gross airplane weight y, in thousands of pounds, can be modeled by the equation 
If a loaded cargo plane weighs 300,000 pounds, what must the minimum thickness of the runway be? Round any partial inch up to the nearest whole inch.
A. 11 in. B. 39 in. C. 40 in. D. 12 in.
Write the best-fit linear model for the data.The paired data below consist of the temperatures on randomly chosen days and the amount a certain kind of plant grew (in millimeters). Find a linear function that approximates a plant's growth as a function of temperature. 
A. y = 7.30 + 0.122x B. y = -14.6 - 0.211x C. y = 7.30 - 0.112x D. y = 14.6 + 0.211x
Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.15x3y3 + 32x2y4 + 16xy5
A. prime B. x(5xy3 + 4y4)(3x + 4y) C. xy3(5x + 4y)(3x + 4y) D. y3(5x + 4y)(3x2 + 4xy)
Solve the equation.s + 5 = 7
A. 12 B. -2 C. -12 D. 2