For the pair of functions, find the indicated sum, difference, product, or quotient.f(x) = x2 + 8, g(x) = 2x - 1Find (f + g)(3).
A. 13
B. 16
C. 22
D. 34
Answer: C
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Solve.Newton's Law of Cooling states that if a body with temperature T1 is placed in surroundings with temperature T0 different from T1, then the body will either cool or warm to temperature T(t) after time t, in minutes, where 
A cup of coffee with temperature 105°F is placed in a freezer with temperature 0°F. After 5 minutes, the temperature of the coffee is 69.3°F. What will its temperature be 20 minutes after it is placed in the freezer? Round your answer to the nearest degree.
A. 20°F B. 16°F C. 17°F D. 18°F
Perform the indicated operation
An engineer needs to find the time it will take for his new computer to do 50 billion calculations. If it takes his new computer seconds to do one calculation, how long will it take to do the 50 billion calculations? Leave your answer in scientific notation.
Use the given information to find the exact value of the trigonometric expression.sin ? = 
; The terminal side of ? lies in Quadrant II.
Find tan 2?.
A. 
B. 
C. - 
D. - 
Provide an appropriate response.Describe two advantages of the substitution method over the graphing method for solving systems of equations.
What will be an ideal response?