Simplify the expression using exponent rules. Then write the answer in scientific notation.
A. 0.4 × 107
B. 0.4 × 109
C. 4 × 103
D. 4 × 108
Answer: D
Mathematics
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A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting the given result.Exactly four twos
A. .083 B. .101 C. .202 D. .075
Mathematics
Determine whether the given function is one-to-one. If so, find a formula for the inverse.f(x) = x3 - 3
A. f-1(x) = 
B. Not a one-to-one function
C. f-1(x) = 
D. f-1(x) = 
+ 3
Mathematics
Compute the sales tax. Round to the nearest cent, if necessary.
A. $71.69 B. $7.93 C. $7.16 D. $7.66
Mathematics
Divide.
A. 0.088447 B. 0.88447 C. 884.47 D. 8.8447
Mathematics