Colson Company has a line of credit with Federal Bank. Colson can borrow up to $800,000 at any time over the course of the 2018 calendar year. The following table shows the prime rate expressed as an annual percentage along with the amounts borrowed and repaid during the first four months of 2018. Colson agreed to pay interest at an annual rate equal to 2 percent above the bank’s prime rate. Funds are borrowed or repaid on the first day of each month. Interest is payable in cash on the last day of the month. The interest rate is applied to the outstanding monthly balance. For example, Colson pays 6 percent (4 percent + 2 percent) annual interest on $80,000 for the month of January. Month Amount Borrowed
or (Repaid) Prime Rate for
the Month
January $ 80,000 4.00 %
February 50,000 4.25
March (30,000 ) 4.50
April 20,000 4.25

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