Please help me guys with this. Thank you.

Asquare parking lot has 6,400 square meters what is the length in meters

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

(03.03 mc) choose the graph below that correctly represents the equation 2x + 4y = 24. (5 points) select one: a. line through the points 0 comma 6 and 12 comma 0 b. line through the points 0 comma negative 6 and 12 comma 0 c. line through the points 0 comma negative 12 and 6 comma 0 d. line through the points 0 comma 12 and 6 comma 0