What is the measure of AC?

What would the rule be for the reflection of y=-3

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.