Chloe invests money in an account paying a simple interest of 4.1% per year. If she invests $30 and no money will be added or removed from the investment, how much will she have in one year, in dollars and cents?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Ineed me i stuck and i don’t want to get it wrong