Ralph is an electrician. He charges an initial fee of $37.50, plus $25 per hour. If Ralph earned $187.50 on a job, how long did the job take?

6

Step-by-step explanation:

25x+37.5=187.5; x as hours

a negative exponent is translated as follows:

so, we have

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.