The price of a computer component is decreasing at a rate of 15% per year. if the component costs $110 today, what will it cost in 3 yrs?

A = p(1 - .15)^t
A = 110(.85)^3
A = $67.55

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post