Me on my final
mr. sheng is using a faucet attachment to fill the fish tank in his biology classroom. the graph below shows the amount of water in the tank during the first several minutes since he turned on the faucet. what is the slope of a line joining the points on the graph? if your answer is not an integer, express it as a decimal.

You are cycling around europe with friends. a cycling festival is starting soon in barcelona. it will take 4.5 hours to cycle there. how many minutes in total is this?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

What is the equation of a line passing through (-6,5) and having a slope of 1/3