Plz answer and write the question number and the answer next to it pl

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Which number line correctly shows 0.8 + 0.3?