Customers of a phone company can choose between two service plans for long distance calls. The first plan has no monthly fee but charges $0.20 for each minute of calls. The second plan has a $19 monthly fee and charges an additional $0.15 for each minute of calls. For how many minutes of calls will the costs of
the two plans be equal?
minutes

380

Step-by-step explanation:

.20x = 19 + .15x

.05x = 19

x = 380

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

step-by-step explanation:

f(gx)=f(1/x+2)

=(1/x+2)+2

=(1+2x)/2+2

=(1+2x+4)/2

= (2x+5)/2