Phone Charges The monthly cost C, in dollars, for calls from the United States to Japan on a certain phone plan is

modeled by the function C(x) = 0.24x + 5, where x is the

number of minutes used.

(a) What is the cost if you talk on the phone for x = 50

minutes?

c

step-by-step explanation:

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.

where is the graph? need more info