The equation below describes a parabola of a is positive which way does the parabola open? X=ay2

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.