write an exponential equation to represent the situation, and solve the equation to answer the question. Be sure to define your variable and show all of your work. 5. The half-life of a substance is 120 years. If there are currently 300 grams of the substance, when will 75 grams remain?

Use a calculator to help solve each problem. Alcohol absorption In one individual, the percent of alcohol absorbed into the bloodstream after drinking two glasses of wine is given by the following formula. Find the percent of alcohol absorbed into the blood after 12 hour. Pt=0.31-e-0.05t where, t is in minutes

Use a calculator to help solve each problem. Tritium decay Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 50 grams, how much remain after 100 years?

What happens to an exponential function as the values of x decreases? Will the graph ever cross the y -axis? Explain.

Pls help ASAP

hter is 18 years old? 19. POPULATION GROWTH A small town in the mountains is experiencing a population boom. The current population is 3800 people and growing by about 15% per year. a. Make a table of values for several years. b. Write an equation for the population in terms of the number of years. c. When will this town's population double?

A pattern of dots grows exponentially. The table shows the number of dots at each step of the pattern. step number 012 3 number of dots 15 25 125 1. Write an equation to represent the relationship between the step number, n, and the number of dots, y. 2. At one step, there are 9,765,625 dots in the pattern. At what step number will that happen? Explain how you know.

Solve questions on number 8 and number 9