In elevator is two floors below ground level and goes up five floors right in addition equation that model is the location of the elevator relative to ground level what integra represents the new location

Ill mark the brainliest if you me with the these three questions 7,8,9

What is the product? a-3/15a × 5/a-3

4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3