Simplify 83.63 -2.89 x (4.9 - 2.9) squared.

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)

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.