Solve the equation for the specified variable.
+ 
= 
for c
A. c = a + b
B. c = 
C. c = ab(a + b)
D. c = 
Answer: B
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Find the area enclosed by the given curves.Find the area of the region in the first quadrant bounded on the left by the y-axis, below by the line 
above left by y = x + 4, and above right by y = - x2 + 10.
A. 15
B. 
C. 
D. 
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. 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. Round your answer to the nearest integer.
?
A. 23,026I0 B. 23,086I0 C. 22,966I0 D. 22,906I0 E. 23,146I0
Simplify using the laws of exponents.(5rt)2
A. 52r2t2 B. 5r2t2 C. 52rt2 D. 52r2t
Multiply.
? 
A. -1
B. 
C. 1
D. 