Zachary has $40 in a savings account. The interest rate is 5% per year and is not compounded. How much interest will he earn in 1 year? Use the formula i=prt, where i is the interest earned, p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.$____
Q. Zachary has $40 in a savings account. The interest rate is 5% per year and is not compounded. How much interest will he earn in 1 year? Use the formula i=prt, where i is the interest earned, p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.$____
Identify Values: Identify the values needed for the formula i=prt.Principal (p) = $40,Interest rate (r) = 5% (which needs to be converted to a decimal),Time (t) = 1 year.
Convert Interest Rate: Convert the interest rate from a percentage to a decimal.5% as a decimal = 1005 = 0.05.
Substitute Values: Substitute the values into the formula to calculate the interest. i=prt,i=($40)×0.05×1.
Perform Multiplication: Perform the multiplication to find the interest.i=($)40×0.05×1=($)2.