Rationalize the denominator. Assume all variables represent positive real numbers.
A. 
B. 8
C. 
D. 
Answer: A
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Use percents, percent equations, and/or percent proportions to solve the application.Ms. Robert bought a house five years ago for $220,000. Today it is valued at $210,000. Find the percent decrease in value of the house.
A. 4.8% B. 95.5% C. 2,100% D. 4.5%
Provide an appropriate response.Divide the fractions and reduce: 
÷ 
A. 
B. 
C. 1
D. 
Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = -1, b = 3f(x) = x4 - 7x3 + 11x2 + 10x + 18
A. f(-1) and f(3) have the same sign, therefore f does not have a real zero between -1 and 3. B. f(-1) and f(3) have opposite signs, therefore f does not have a real zero between -1 and 3. C. f(-1) and f(3) have opposite signs, therefore f has a real zero between -1 and 3. D. f(-1) and f(3) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between -1 and 3.
Find the requested probability.What is the probability that 13 tosses of a fair coin will show 8 heads?
A. 0.0314 B. 0.0786 C. 0.3142 D. 0.1571