Find the coordinates of the y-intercept for the graph with equation: y=x2+x−1

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?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Which number can each term of the equation be multiplied by to eliminate the decimals before solving? 5.6j- 0.12=4+1.1j