Answer: First option.
Step-by-step explanation:
For this exercise it is important to observe the picture given in the exercise and analize the information provided.
You can observe in the picture that the measure of the angle ADC can be obtained my adding the measures of the angles ADB and BDC. Therefore, knowing this, you can write the following equation:

You can identify in the picture that:

Therefore, you can substitute those values into the equation and then evaluate in order to find the measure of the angle ADC.
You get that this is:

Answer:
9 miles/year
Step-by-step explanation:
You need to know miles per year.
That means the same as miles divided per year.
(73 miles)/(8 years) = 9.125 miles/year
Rounded to the nearest whole number: 9 miles/year
If you Measure both sides it will be the same so the answer is 40
The mean is the average of a set of numbers. So to do that:
add all the numbers 120+235+98+142=$595
Then divide that by the total number in the set, in this case it is 4.
$595/4= $148.75 assuming that the prices given are the final price of the job.