Acredit card issuer offers an apr of 19.94% and compounds interest monthly. find the effective interest rate and explain which the card issuer is mostly likely to advertise, its apr or its effective interest rate?

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?