If a country's debt-to-gdp ratio is currently 20% and its debt is expected to grow from $15 trillion to $25 trillion in the next 15 years, what will the country's gdp have to be in 15 years to maintain the current debt-to-gdp ratio? a. $75 trillion b. $3 trillion c. $5 trillion d. $125 trillion show me how to do this also : )

Marco is studying a type of mold that grows at a fast rate. he created the function f(x) = 345(1.30)x to model the number of mold spores per week. what does the 1.30 represent? how many mold spores are there after 4 weeks? round your answer to the nearest whole number. 1.30 represents the number of mold spores marco had at the beginning of the study; 985 mold spores 1.30 represents the number of mold spores grown in a given week; 448 mold spores 1.30 represents the 30% rate of weekly growth; 345 mold spores 1.30 represents the 30% rate of weekly growth; 985 mold spores

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply