Isabel's fish tank has 18 liters of water in it. She plans to add 6 liters per minute until the tank has at least 72 liters. What are the possible numbers of minutes Isabel could add water?

Andy is making a design using ice cream sticks that are 4 and 1/2 in long he wants this long side of his designed to be no longer than 24 inches what is the greatest number of sticks that any can use on his long side of his design

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years