VERY EASY 6TH GRADE MATH! BRAINLIEST PROMICED! ONLY 3 EASY QUESTIONS! PLS HELP :( I PUT ALL MY POINTS IN THIS! Rick deposits $3 into his bank account. The following week, he deposits 3 times that amount. Each week after that, he deposits 3 times the amount he did the previous week. How much does he deposit in all during the first 3 weeks?
1. Write an exponential expression that represents Rick’s deposit in the second week. Explain how you identified the base and the exponent.

2. How much does Rick deposit in all in the first 3 weeks? Show your work.

3. Do you think Rick can keep up this savings plan for a year? To help you decide, use a calculator to find 315, the amount he would deposit in week 15.