Solve the initial value problem.u'(x) = 5u + 15, u(1) = 1
A. u = e5x - 5 - 3
B. u = 4e5x - 5 - 3
C. u = 12e5x + 5 - 3
D. u = 12e5x + 5 + 3
Answer: B
Mathematics
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Solve.For f(x) = (x + 5)(x - 6)(x - 9), find all x-values for which f(x) > 0.
A. (-?, -5) ? (6, 9) or {x|x < -5 or 6 < x < 9} B. (-5, 6) ? (9, ?) or {x|-5 < x < 6 or x > 9} C. (-?, 6) or {x| x < 6} D. (9, ?) or {x|x > 9}
Mathematics
Solve the problem.Suppose that f and g are continuous and that 
and 
A. -2 B. 2 C. -12 D. 12
Mathematics
30 gtt = ? t
A. 2t B. 1t C. 1/4 t D. 1/2 t
Mathematics
Use properties of logarithms to expand the logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.log2
A. 
log210 + 
log2x
B. log2
+ log2
C. log210 + 
log2x
D. 
log210x
Mathematics