A culture begins with 3000 bacteria and doubles every 15 hours. If the population is increasing exponentially, calculate the population after 30 hours, after 45 hour

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

What expression is equivalent to (84+16)