If prices increase at a monthly rate of 1.4
%, by what percentage do they increase in a year?

(1+1.4/100)^12

1.014^12

1.181559

So they increase by about 18.16% per year  (to nearest hundredth of a percent)

7days is 168 hours in decimal form it is just 168 there is no decimal form for this because it is like 168.0 and there is no number you are dividing it by for it to be a decimal.hope this