Luke invested $110 at 3% simple interest for a period of 6 years. how much will his investment be worth after 6 years?
a) $132.80
b) $133.80
c) $127.80
d) $129.80
e) $126.80
f) none of the above.

investment after 6 years = $129.80

Explanation:

given data

invested = $110

simple interest = 3%

period = 6 years

to find out

How much will his investment be worth after 6 years

solution

first we get here interest that is express as

interest = invested amount × rate × time    1

interest = $110 × 3% × 6

interest = $19.8

and

investment after 6 years = invested amount + interest   2

investment after 6 years = $110 + $19.8

investment after 6 years = $129.80

a manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. at the end of december, the company wishes to forecast sales for january. the estimate of trend through november has been 200 additional boards sold per month. average sales have been around 1000 units per month. the demand for december was 1100 units. the company uses α = 0.20 and β = 0.10. make a forecast including trend for the month of january.

you have to put the parentheses like this:

in fact, you have to perform the operation inside parentheses first, and then proceed in order: