Solve the problem.An earthquake was recorded as 106.5 times more powerful than a reference level zero earthquake. What was the magnitude of this earthquake on the Richter scale? R = log
.
A. 16.5
B. 6.5
C. 3.5
D. 15
Answer: B
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Solve the system. If there is no solution or if the system's equations are dependent, so state.
A. no solution or ? B. {(3, 3, -1)} C. {(2, -8, -5)} D. infinitely many solutions; dependent equations
The weight of an adult blue whale is related to its length by the formula
,
where L is the length, in feet, and W is the weight, in tons.A: Find a formula that expresses L as a function of W.B: How long would the whale need to be to weigh 94 tons?C: A blue whale is spotted, and its length is estimated to be 82 feet. Use this length to find the whale's weight.
What will be an ideal response?
Solve the problem.Using the following properties of a twice-differentiable function y = f(x), select a possible graph of f.
A. 
B. 
C. 
D. 
Perform the indicated operation. Write the result in standard form.8i + (-5 - i)
A. 5 - 7i B. -5 + 7i C. -5 + 9i D. 5 - 9i