Can someone please help me

Rearrange the formula c^2 = a^2 + b^2 for b

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.

Ling listed all of the factors of a mystery number: 1,2,4,8,16,32 what is the mystery number?