Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = -9x9 + x5 - x2 + 8
A. 2 or 0 positive zeros, 3 or 1 negative zeros
B. 3 or 1 positive zeros, 3 or 1 negative zeros
C. 3 or 1 positive zeros, 2 or 0 negative zeros
D. 2 or 0 positive zeros, 2 or 0 negative zeros
Answer: C
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Provide an appropriate response.Of the mean, median, and mode, which take(s) into account the numerical size of all the data values?
A. All of them B. The mean and median C. The mean only D. The median and mode
The graph of the function f is shown below. Match the function g with the correct graph.g(x) = -f(-x) - 4
A. 
B. 
C. 
D. 
A student is studying mathematics and chemistry. The probability that he passes mathematics is 0.75, the probability that he fails chemistry is 0.2, and the probability that he passes mathematics but fails chemistry is 0.05.Find the probability that he either passes mathematics or fails chemistry.
A. 1.0 B. 0.90 C. 0.15 D. 0.95 E. none of these
Solve the problem.An electric company has the following rate schedule for electricity usage in single-family residences:Monthly service charge $4.93Per kilowatt service charge1st 300 kilowatts$0.11589/kWOver 300 kilowatts$0.13321/kWWhat is the charge for using 300 kilowatts in one month?What is the charge for using 375 kilowatts in one month?Construct a function that gives the monthly charge C for x kilowatts of electricity.
What will be an ideal response?