One electrician charges a flat fee of $55 to come to the house, $20 per hour, and the cost of all materials. If h represents the number of hours that
the electrician spent fixing the problem, C represents the total charge, and m
represents the cost of materials, which of the following equations shows how
to determine the total fee charged?

C=20+55h+m

C=mh+55 +20

C=(55+20)h+m

C=55+20h+m

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

1. what is the measure of ∠abc? what is the measure of ∠abd?

Explain how you can use the associative property to evaluate (7x50)x4.