Use the properties of logarithms to find the exact value of the expression. Do not use a calculator.2 ln e4.2
A. e8.4
B. 2.1
C. 4.2
D. 8.4
Answer: D
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Solve the system by graphing. Check the coordinates of the intersection point in both equations.y = x + 5y = -x + 7
A. {(-5, 7)} B. {(1, 6)} C. {(5, -7)} D. {(6, - 1)}
Calculate the instantaneous velocity for the given value of t of an object moving with rectilinear motion according to the given function relating s (in ft) and t (in s)s = t3 + t2 - 6t - 7; t = -3
A. -14 ft/s B. 14 ft/s C. 15 ft/s D. 21 ft/s
Find the derivative.p = 
A. 
= - csc q cot q
B. 
= sec2 q + 1
C. 
= sec q tan q
D. 
= sec2 q
Identify the quantities that are variable and the quantities that are constant.(the number of ounces in a pound of flour) ÷ (the number of guests at dinner)
A. number of ounces: constant; number of guests: variable B. number of ounces: variable; number of guests: variable C. number of ounces: constant; number of guests: constant D. number of ounces: variable; number of guests: constant