Question

You had 10 houses on Monday, however every week you find a new
house deed on the floor at a rate of 50 percent per week. At the end of 5
weeks how many homes do you have total?

Answer 1

n = 10 + 10*.5^1 + 10*.5^2 + 10* .5^3 + 10 * .5^4 + 10*10^5
sum of geometric sequence with a = 10 and r = 0.5
google that