For the grouped data
Score
Frequency
10-15
4
16-20
6
21-25
11
26-30
13
an estimate of the mean is _____.
A. 22.5
B. 8.5
C. 22.79
D. 20.375
Answer: C
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Solve the equation for x, where x is restricted to the given interval.y = -5 sin 8x, for x in 
A. x = 
arcsin 
B. x = 
arcsin 
C. x = 
arcsin 
D. x = - 
arcsin 
Estimate the quotient by first approximating the dividend and divisor with numbers that can be divided more easily. 
A. 8 B. 12 C. 99 D. 13
Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. The manager of a coffee shop has one type of coffee that sells for $8 per pound and another type that sells for $15 per pound. The manager wishes to mix 60 pounds of the $15 coffee to get a mixture that will sell for $11 per pound. How many pounds of the $8 coffee should be used?
A. 80 pounds B. 140 pounds C. 40 pounds D. 70 pounds
Add.14.57 + 1 + 98.02 + 12.272
A. 126.862 B. 125.872 C. 125.962 D. 125.862