X - 7 = -1, what does 'x' equal?

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

Which number line correctly shows 0.8 + 0.3?

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.