Find the logarithm using the change-of-base formula.log7.9 6.8
A. 0.9275
B. 0.8325
C. 0.8608
D. 1.0782
Answer: A
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Solve the initial value problem.Differential Equation: 
= 
(t + 5)3/2i + etjInitial Condition: r(0) = 0
A. r(t) = [(t + 5)7/2 - 57/2]i + (et - 1)j B. r(t) = (t + 5)5/2i + etj C. r(t) = [(t + 5)5/2 + 55/2]i + (et + 1)j D. r(t) = [(t + 5)5/2 - 55/2]i + (et - 1)j
Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = zi + xyj + zyk; D: the solid cube cut by the coordinate planes and the planes 
y = 1, and z = 1
A. 1
B. 
C. 2
D. 
Solve the problem.Anne and Nancy use a metal alloy that is 16% copper to make jewelry. How many ounces of an alloy that is 10% copper must be mixed with an alloy that is 20% copper to form 55 ounces of the desired alloy?
A. 38 ounces B. 24 ounces C. 22 ounces D. 33 ounces
Decide whether the relation is a function.?
A. Function B. Not a function