1.) Alfred wants to invest $4,000 at 6% simple interest rate for 5 years. How much interest will he receive?

2.) The city council has decided to add a 0.3% tax on motel and hotel rooms. If a traveler spends the night in a motel room that costs $55 before taxes, how much will the city receive in taxes from him?

3.) Grace has 16 jellybeans in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color?

4.) The sales price of a car is $12,590, which is 20% off the original price. What is the original price?

I know that these are simple, but like I said, I haven't done stuff like this in a while and can't remember how to do them.

Thanks for any and all help,

Sky J.