How many feet are in 8.72 mm?
1 mm = 3.28 × 10^-3 ft
a.
2.659 × 10^3 feet
b.
2.86 × 10^-2 feet
c.
2.86 × 10^1 feet
d.
2.86 × 10^-1 feet

Really need on these. i have no idea what to do

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

If you have the following equation, 2/3x+5/6-x=2-3/4x what would you multiply each term by to get rid of all the fractions