Final answer:
To calculate the total amount of money John will have in his savings account after 6 years with a simple interest rate of 4%, multiply the principal by the rate and the time, then add it to the principal.
Step-by-step explanation:
To calculate the total amount of money John will have in his savings account after 6 years with a simple interest rate of 4%, we can use the formula:
Total = Principal + (Principal x Rate x Time)
Substituting the given values: Principal = $7500, Rate = 4%, Time = 6 years:
Total = $7500 + ($7500 x 0.04 x 6) = $7500 + $1800 = $9300.
So, John will have a total of $9300 in his savings account after 6 years.