B. Perform what is asked.1. Ifa certain country has a population of about 30,000,000 people and adoubling time of 19 years and if the growth continues at the same rate, findthe population in 10 years?2. Radioactive gold 198, used in imaging the structure of the liver, has a half-lifeof 2.67 days. If we start with 50 milligrams of the isotope, how many milligramswill be left after 2 weeks?3. A laptop has a suggested retail price of P36,999. After T months, the laptop'svalue is given by V(t) = 36,999 ). Find the value of the laptop after6months.

Since you have posted a multiple question according to guildlines I will solve first question…

Answered: Perform what is asked. 1. Ifa certain…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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1. Pretend that in a certain city the number of new cases of COVID was reported to be 200 new cases on Sunday. Let’s pretend that the number of new cases grows by 22% on Monday, and then after that falls by 22% on Tuesday Question C: What percent would the percent increase have to be on Monday to have a total change of zero% from Sunday to Tuesday? i.e. new covid cases go up by ???% on Monday and then down 22% on Tuesday for a total change of 0%. (Use decimals in answer if needed)
The interest earned if OMR 250 is invested at a rate of 10% compounded semi- annually for 5 years is ________________. a. OMR 407.22 b. OMR 306.22 c. OMR 157.22 d. OMR 125
8. Exponential candy A student opened a bag of M&M'S® Chocolate Candies, dumped them out, and ate all the ones with the "M" on top. When he finished, he put the remaining 30 M&M'S back in the bag and repeated the same process over and over until all the M&M'S were gone. Here are data on the number of M&M'S remaining at the end of each of the first 6 courses. Course Number remaining 1 2 3 4 5 6 30 13 10 3 2 1 (a) Calculate an exponential model for these data using course as the explanatory variable. (b) Sketch the scatterplot, along with the exponential model. (c) Calculate and interpret the residual for the first course.
Find the present value of a $3, 000 annual income stream if it is invested immediately as it is received into an account paying 12% interest compounded continuously forever. Round your answer to the nearest cent. Enter your answer as an integer or decimal number. Examples: 3,-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity
2. Winter Olympics run every 4 years; the last one was held in 2018. Write a formula, an = f (n), that represents the year of future Olympics.
Suppose a population has a doubling time of 15 years. By what factor will it grow in 75 years? The population increases by approximately ____% every year (Nearest hundredth of a percent) The higher the interest rate, the less accurate the approximation in part b. Use logs, radicals, or iteration to calculate the exact yearly growth rate for the population. The population increases by ____% every year. (Round to nearest hundredth of a percent)

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Perform what is asked. 1. Ifa certain country has a population of about 30,000,000 people and a doubling time of 19 years and if the growth continues at the same rate, find the population in 10 years?