Solve.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = 
, where t is measured in seconds. Solve the equation for h. Use the result to determine the height from which an object was dropped if it hits the ground after falling for 2 seconds.
A. h = 4.9t
B. h = 24.01t2
C. h = 24.01t
D. h = 4.9t2
Answer: D
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A. (-8, 9), (-9, 8) B. (8, 9), (9, 8) C. (8, -9), (9, -8) D. (-8, -9), (9, 8)
Solve for x and y: x - 9y = 10; 3x + y = 2
a. x = 1 y = -1 b. x = -1 y = 1 c. x = -1 y = 1 d. x = 1 y = 1 e. x = 1 y = 0
Use Euler's formula to answer the question.A polyhedra has 36 edges and 20 faces. How many vertices does it have?
A. 18 B. 54 C. 15 D. 56
Solve the problem.A survey of the interest rates earned by Certificates of Deposit (CDs) showed the following percents for the length of time (in years) for holding the CD. Let length of time represent the independent variable and interest rate represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the estimate of the interest rate for a CD held for 30 years (to the nearest thousandth)? 
A. 8.874 B. 8.675 C. 8.669 D. 9.064