Let i = 4 f(x) dx, 0 where f is the function whose graph is shown.

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin. how many doctors use brand x aspirin