Which table represents a nonlinear function?
a)
b)
c)
d)

For what values of b will f(x)= logbx be a decreasing function? (16 )

Write the expression as a single natural logarithm. 2 in a - 4 in y

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.