Use a proportion to solve the problem.Joan can mow a 7-acre field in 3 hours. How long would it take her to mow a 2.1-acre field?
A. 3.9 hours
B. 0.9 hour(s)
C. 0.3 hour
D. 2.9 hours
Answer: B
Mathematics
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Multiply using the rule for finding the product of the sum and difference of two terms.(4 - 9r)(4 + 9r)
A. 16 - 9r2 B. 16 - 72r - 81r2 C. 16 - 81r2 D. 16 + 72r - 81r2
Mathematics
Provide an appropriate response.Write the quotient using positive exponents: 
A. 
B. x3
C. 
D. x7
Mathematics
Provide an appropriate response.Not all mortgages are paid on a monthly basis.
A. True B. False
Mathematics
Round the decimal to the given place value.5.367, nearest tenth
A. 5.3 B. 5.5 C. 5.367 D. 5.4
Mathematics