If f(x) is an exponential function where f(3.5) = 12 and f(9) = 75, then find the value of f(7.5), to the nearest hundredth.

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

the answer is 40.

proof: