Multiply.(2x + 0.5)(2x - 0.5)
A. 4x2 - 2x- 0.25
B. 4x2 - 0.25
C. 4x2 - 1
D. 4x2 - 2.5
Answer: B
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Solve the equation for the indicated variable.P = a + b + c
for c
A. c = P + a - b B. c = a + b - P C. c = P - a - b D. c = P + a + b
On the Richter scale, the magnitude R of an earthquake is given by the formula 
where I is the intensity of the earthquake being measured and I0 is the standard reference intensity.
?
What is the magnitude of an earthquake that has intensity 10 millions times that of I0?
?
R = __________
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Suppose an earthquake is measured with a magnitude of 5 on the Richter scale with an error of at most 2%. Use differentials to find the error in the intensity of the earthquake.
?
Hint: Observe that 
and use logarithmic differentiation. Round your answer to the nearest integer.
?
__________I0
What will be an ideal response?
Solve the problem.Mrs. Ito has $5842 in her checking account. How much is in the account after she writes a check for 
?
A. $5213 B. $6471 C. $6481 D. $5113
Evaluate using the correct order of operation.
× 
A. 
B. 
C. 
D. 