20 customers are eating at a local resturant. of the 20 customers 4 have enough to pay cash, 16 have enough to pay card and 3 have enough to pay cash and card, what is the probability that the customer has enough to pay card

19/20

Step-by-step explanation:

20 is the total number of people (the denominator) and 19 is the amount of people able to pay card (the numerator)

a negative exponent is translated as follows:

so, we have

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.