Use the binomial theorem to expand and simplify the expression 
a. 
b. 
c. 
d. 
c.
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Solve the problem.When water runs out of a hole in a cylindrical container, the height of the water in the container can often be modeled by a quadratic function. Assume that the height of the water in a particular metal can with a small hole can be modeled by 
where x is the time (sec) and h is the height (cm). Use the quadratic formula to estimate the time when the height is 5 cm. Round your answer to the nearest second.
A. 24 sec B. 31 sec C. 30 sec D. 28 sec
Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.1
÷ 
A. 8
B. 
C. 8
D. 8
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log x + log (x +1) = log 72
A. 
B. {9, -8}
C. {9}
D. {8}
Use the distributive property to write without parentheses.- (-5t - 4r - 6s)
A. -5t - 4r - 6s B. 5t + 4r - 6s C. 5t + 4r + 6s D. -5t - 4r + 6s