Perform the indicated operations. Write the answer using only positive exponents. Assume that all variables represent positive real numbers.
A. - 
B. 
C. 
D. 
Answer: B
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Find the limit L for the given function f, the point x0, and the positive number ?. Then find a number ? > 0 such that, for all x, 
f(x) = 
, x0 = 7, ? = 0.4
A. L = 4; ? = 1.56 B. L = 4; ? = 0.78 C. L = 4; ? = 7.78 D. L = 4; ? = 0.64
Use the simple interest formula to determine the missing value. Round dollar amounts to the nearest cent and percents to the nearest hundredth when necessaryp = $6205, r = ?, t = 5 months, i = $90.49
A. r = 28.57% B. r = 1.4% C. r = 0.04% D. r = 3.5%
Solve the problem.The cost of a computer system increases with increased processor speeds. The cost C of a system as a function of processor speed is estimated as C = 5S2 - 3S + 1400, where S is the processor speed in MHz. Find the processor speed for which cost is at a minimum.
A. 0.2 MHz B. 0.3 MHz C. 2.4 MHz D. 6 MHz
Multiply or divide measurement numbers, rounding to the correct precision.
A. 0.044375 
B. 0.04438 
C. 0.0444 
D. 0.044 