Theo left Phoenix traveling 55 mph. Two hours later, Dennis left Phoenix following Theo and he was speeding along at 75 MPH. How many hours will it take Dennis to catch up with Theo?

5.5 hours

Step-by-step explanation:

After the two hours Theo had a 110 mile lead so you simply divide this by the difference in their speed to get the time

"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.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72