Determine if the parabola whose equation is given opens upward or downward.y = -4x2 - 2x - 2
A. Downward
B. Upward
Answer: A
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Solve the problem.SPA Corporation has about 23,500 employees who serve as security guards. The average length of service for these employees is 9.3 years with a standard deviation of 4.2 years. Compute the length of service for each employee. Round to the nearest one-tenth of a year.A time in service with a z-score of 1.3.A time in service with a z-score of -0.5
A. 13.5, 5.1 B. 7.4, 9.4 C. 14.8, 7.2 D. 17.3, 9.2
Write an English phrase that would translate into the given mathematical expression.
- 4y
A. The difference of y and the product of 4 and y B. The difference of the quotient of 8 and a number y and the product of 4 and the number y C. The quotient of a number y and 8, decreased by the product of 4 and y D. The quotient of a number 8 and y, decreased by the sum of 4 and y
Solve by using the quadratic formula.x2 - 24 = 0
A. {576}
B. {±6
}
C. {±12}
D. {±2
}
Write the expression in lowest terms.
A. 
B. 
C. 
D. 