Biologists tagged 139 fish in a lake on January 1, On February 1, they returned and collected a random sample of 30 fish, 10 of which had been previously tagged. On the basis of this experiment, approximately how many
fish does the lake have?

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

Consider the function f(x)=−2/3x+5 . what is f(1/2) ? enter your answer, as a simplified fraction, in the box. f(1/2)=

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).