Simplify the expression.
?
?
Express the answer without using negative exponents. Assume that all variables are restricted to those numbers for which the expression is defined.
?
A. 
B. ?
C. ?
D. ?
Answer: A
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Provide an appropriate response.How would you solve the equation 
How many equations would you need to solve it? What are their solutions?
What will be an ideal response?
Evaluate. Assume u > 0 when ln u appears. 
A. 
+ C
B. 
+ C
C. 
+ C
D. 54(ln x)53 + C
Evaluate the integral.Use the formula 
to evaluate the integral. 
A. x cot-1 x - ln
+ C
B. x cot-1 x + x + C
C. x cot-1 x + ln
+ C
D. x cot-1 x + ln x + C
Solve.Each of the seven joints in the new design of the space shuttle's booster rocket had a 0.987 reliability when tested. The seven rocket joints work independently. A 0.987 reliability means that the probability of a rocket joint working successfully is 0.987. What is the probability that all seven rocket booster joints work successfully? Estimate the probability to three decimal places if necessary.
A. 0.987 B. 0.924 C. 0.901 D. 0.912