Answer:
20in
Step-by-step explanation:
You have -4,-3,-2, that is a 3 out of a total of 21 points or numbers on the number line. 3/21 is reduces to 1/7.
3 goes into 21 , 7 times. That is why it reduces to 1/7.
I suppose you're supposed to convert 100111 from base 2 to base 10. We have

so the missing number is 39.
X: -2| -1| 0| 1| 2|
y: 1.25| 2.5| 5| 10| 20|
Formula is y = mx + b
Answer y = - 2/3x - 3