16) Naturalists find that the populations of some kinds of predatory animals vary periodically. that the population of foxes in a certain forest varies sinusoidally with time. Records started being
kept when time t= 0 years. A minimum number, 200 foxes, existed when t = 2.9 years. The next
maximum, 800 foxes, occurred at t = 5.1 years. Write an equation to model.

Ac equals 35 cm long

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.