14 i believe, if it’s a mid segment then 7 is half of x.
You have to find the percentage of calculators that are defective. to do this you do 6/900. Which equals 0.006666, you convert it to a percent by moving the decimal point 2 to the right which is 0.6666%, then you round to the nearest tenth as instructed in the question and you get 0.6%
2200 miles done by getting rid of the exponents and multiplying

In the number line attached in my attachment,
The red line represents point :
The blue line represents point :
I hope it helps ~