Someone plz i need it asap 15 points

the amount of money in an account may increase due to rising stock prices and decrease due to falling stock prices. marco is studying the change in the amount of money in two accounts, a and b, over time.

the amount f(x), in dollars, in account a after x years is represented by the function below:

f(x) = 10,125(1.83)x

part a: is the amount of money in account a increasing or decreasing and by what percentage per year? justify your answer. (5 points)

part b: the table below shows the amount g(r), in dollars, of money in account b after r years:

r (number of years) 1 2 3 4
g(r) (amount in dollars) 9,638 18,794.10 36,648.50 71,464.58

which account recorded a greater percentage change in amount of money over the previous year? justify your answer. (5 points)

At river bank, checking account customers earn 0.75% interest a month on their account balances, pay no service fees for writing checks, and pay a monthly $2.00 financial charge. calculate the income earned in one month on the checking account for a customer with an account balance of $1,000. a. $4.25 b. $5.50 c. $6.75 d. $7.25 checking account earnings at baker’s bank are expressed by the equation: i = -0.09x + 10.2. while the earnings at elite bank are modeled by: i = -0.02x + 7.5. in both cases, x is the number of checks written. at what number of checks will elite bank start generating more checking account income than baker's bank? a. 12 b. 25 c. 39 d. 42 emilio’s checking account had a balance of 728.32 at the beginning of the week. he wrote checks for the following amounts throughout the week: $99.48, $33.50, $18.23, and $72.05. he also deposited his paycheck in the amount of $1,109.90. what is his account balance at the end of the week? a. $1,192.35 b. $1,222.86 c. $1,540.52 d. $1,614.96