Answer:
80/1 1/4 (Fraction)
Step-by-step explanation:

Four hundred thousand two hundred five
a) The formula for compound interest is:
Total = starting amount x (1 + interest rate)^ number of years
b)
Using the given information you have:
1200 = 500 x (1+0.045)^x where x is the length of time you want to find.
1200 = 500 (1.045)^x
Divide both sides by 500:
2.4 = 1.045^x
Use natural logarithms:
ln(1.045^x) = ln(2.4)
Solve for x:
X = ln(2.4) / ln(1.045)
X = 19.889 years ( Round the answer as needed).
The expression c+0.07c or 1.07c can be used to calculate the price including tax.
Step-by-step explanation:
Given,
Cost of jacket = c
Sales tax = 7%
Amount of sales tax = 7% of cost of jacket
Amount of sales tax = 
Amount of sales tax = 0.07c
Cost of jacket including tax = Cost of jacket + Amount of sales tax
Cost of jacket including tax = c + 0.07c = 1.07c
The expression c+0.07c or 1.07c can be used to calculate the price including tax.
Keywords: percentage, division
Learn more about division at:
#LearnwithBrainly