Simplify the expression by combining like terms, if possible.9m + 5n - 4m + 3(m - 7n)
A. 8m - 16n
B. 2m + 26n
C. 8m - 2n
D. 16m + 26n
Answer: A
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Graph the polar equation.r = 5 - cos ?
A. 
B. 
C. 
D. 
Solve the equation.log (5 + x) - log (x - 4) = log 4
A. 
B. {-7}
C. {7}
D. ?
Determine whether the expression is a polynomial. If the polynomial is a monomial, binomial, or trinomial, so state. If the expression is not a polynomial, indicate why not.
A. Monomial B. Binomial C. Trinomial D. Not polynomial; It is a quotient of polynomials and cannot be simplified to a polynomial.
Solve the problem.Suppose that the weather in a certain city is either sunny, cloudy, or rainy on a given day, and consider the following:1) If it is sunny today there is a 70% chance it will be sunny tomorrow and a 30% chance that it will be cloudy.2) If it is cloudy today there is a 40% chance it will be sunny tomorrow, a 40% chance that it will be cloudy, and a 20% chance that it will be rainy.3) If it is rainy today there is a 40% chance it will be sunny tomorrow, a 30% chance that it will be cloudy, and a 30% chance that it will be rainy.In the long run, how likely is it that the weather will be rainy on a given day?
A. 11.3% B. 12.1% C. 10.6% D. 9.5%