A desalinization process is eliminating 20% of the salt from seawater every 10 minutes. There are initially 450 g of salt in 10 liters of water. Find an exponential function for A, the grams of salt in the 10 liters of seawater t minutes after the process has begun. A= ? Use the model to predict the amount of salt (in grams) in the seawater after 35 minutes. Round to the nearest whole number. Which is 206 g

Vivian takes a 425 mg aspirin for her headache. The amount of aspirin remaining in her system decays exponentially according to the model A=425⋅(0.855)tA=425⋅(0.855)t, Where AA is in milligrams (mg) and tt is in hours after she takes the aspirin. Answer the following questions, rounding each to the nearest whole mg. (a) How much aspirin is in Vivian's system immediately after taking the aspirin?    (b) How much aspirin is in her system after 3 hours?    (c) How much aspirin is in her system if she takes another aspirin 4 hours after the first?

The world's output of primary energy (petroleum, natural gas, coal, hydroelectricity, and nuclear electricity) is increasing at the rate of 2.4% annually.+ How long will it take to increase by 70%? (Round your answer to one decimal place.) yr