Find the value.Let f(x, y) = 
+ xy. Find f(9, 9).
A. 1
B. 82
C. 80
D. 162
Answer: B
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Find the value of s in the interval [0, ?/2] that makes the statement true. Round to four decimal places.sec s = 3.7404
A. 0.2706 B. 4.9830 C. 1.3002 D. 1.8414
Solve.The number of pets (measured in thousands) living in Springfield homes can be approximated by the equation N(x) = 0.16x2 - 0.23x + 158.5, where x is the number of years after 1990. Find 
A. N(9) = 171,230 B. N(9) = 1596.43 C. N(9) = 169,390 D. N(9) = 10,890
Provide an appropriate response.Finish the statement with a correct response. To divide two fractions one needs to:
A. Use the reciprocal of the second fraction (divisor), add the numerators and multiply the denominators. B. Use the reciprocal of the second fraction (divisor) and multiply. C. Add the numerators and multiply the denominators. D. Add the numerators and factor the denominators.
Perform the indicated operation. Write the result in the form a + bi.
A. 1 - 
i
B. - 
+ 
i
C. - 
+ 
i
D. 1 + 
i