John joined a fitness club that has a membership fee of $30 +25 per month. mary’s club has a fee of 50 and charges 15 per month. how many months with the total cost be the same?

Pranza plotted point a in the coordinate plane below.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.