Cynthia invests some money in a bank which pays 5% compound interest per year.
She wants it to be worth over 8000 at the end of 3 years.
What is the smallest amount, to the nearest pound, she can invest?​

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes. she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?