F(x)-7=4(x-5) what is the value of f(3)

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

Secant be and cf intersect at point d inside a what is the measure of cde

Write the equation of the circle centered at (10,-2) with radius 2.