An initial number of bacteria presented in a culture is 1,000. this number triples every 30 minutes. write a function expressing the number of bacteria over time.

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

(! ) three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder