Solve the problem.A gymnast needs to score an average of 8.4 in order for her team to win the competition. Her score was 9.5 on her uneven bars, 7.9 on the floor exercise, and 8.5 on the vault. What must her score be on the balance beam for her team to win?
A. 7.7
B. 8.6
C. 8.7
D. 8.4
Answer: A
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Find the domain of the function. Write the domain using interval notation.f(x) = 
A. (-?, -9) ? (-9, ?) B. (-?, -5) ? (-5, 5) ? (5, ?) C. (-?, 0) ? (0, ?) D. (-?, 9) ? (9, ?)
Use the given conditions to write an equation for the line in slope-intercept form.Passing through (3, -4) and parallel to 7x + y = 7.
A. y = 7x - 17
B. y = - 7x - 17
C. y = - 7x + 17
D. y = - 
x - 
Find the amount of interest earned by the following certificates of deposit. Assume daily compounding. Round to the nearest cent.
Amount: $57,624.54Interest rate: 6%Time: 10 years
A. $37,379.01 B. $47,369.04 C. $58,409.25 D. $20,158.53
Solve the problem.Marty's Tee Shirt & Jacket Company is to produce a new line of jackets with a embroidery of a Great Pyrenees dog on the front. There are fixed costs of $610 to set up for production, and variable costs of $39 per jacket. Write an equation that can be used to determine the total cost, C, encountered by Marty's Company in producing x jackets, and use the equation to find the total cost of producing 78 jackets.
A. $3632 B. $3664 C. $3644 D. $3652