Brandon has a 55 gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute in a linear model of this situation, represents the number of minutes the tank has been training and y represents the amount of water in the tank.
Relative to this situation, what does the y-intercept represent
CA They
intercept represents the amount of water in the tank after it has been drained
OB. The yntercept represents the amount of water in the tank before it begins draining
OC. They-intercept represents the rate at which the tank can be drained
OD. They
interest represents the number of minutes it takes to drain the tank

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

Evaluate the expression. (9 + 5)(3 + 2)0