Write the differential equation (unlimited, limited, or logistic) that applies to the situation described. Then use its solution to solve the problem. A person can memorize at most 40 two-digit numbers. If that person can memorize 25 numbers in the first 20 minutes, nd a formula for the number that can be memorized in t minutes. (Round your coefficients to four decimal places.) y: Use your answer to estimate how long the person will take to memorize 32 numbers. (Round your answer to the nearest minute.) min Need Help? W Submit Answer [12 Points] BERRAPCALC7 9.2.042. ASK YOUR TEACHER PRACTICE ANOTHEF During a flu epidemic in a city of 1,000,000, a flu vaccine sells in proportion to both the number of people already inoculated and the number not yet inoculated. If 100 doses have been sold at time t = o and after 5 weeks 4000 doses hav been sold, nd a formula for the total number of doses sold within t weeks. (Round your coefcients to three decimal places.) Write the differential equation (unlimited, limited, or logistic) that applies to the situation described. Then use its solution to solve the problem. y: Use your formula to predict the sales after 13 weeks. (Round your answer to the nearest whole number.) doses