Solve the problem.The total weekly earnings for a part-time job equals $6 per hour times the number of hours worked. Translate this to a formula, and use the formula to calculate the total weekly earnings for working9 hours.
A. $15
B. $6
C. $9
D. $54
Answer: D
Mathematics
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Identify and graph the polar equation.r = 2 + 2 cos ?
A. cardioid
B. cardioid
C. cardioid
D. cardioid
Mathematics
Solve the problem.Conservationists tagged 70 black-nosed rabbits in a national forest in 1990. In 1991, they tagged 140 black-nosed rabbits in the same range. If the rabbit population follows the exponential law, how many rabbits will be in the range 8 years from 1990?
A. 17,920 B. 153 C. 76 D. 35,840
Mathematics
Use rational exponents to simplify. Do not use fraction exponents in your final answer.
A. 
B. 
C. x3
D. x5
Mathematics
Solve the equation.-0.09y + 0.15(6000 - y) = 0.26y
A. 1800 B. 4500 C. 450 D. 5400
Mathematics