Find the least common denominator for these
two rational expressions.
-7/a -9/5a^2

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Find the equation of a line that is perpendicular to line g that contains (p, q). coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 3x − y = 3p − q 3x + y = q − 3p x − y = p − q x + y = q − p

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano