Can anyone me out with this? it is algebra 1

1. -9n -n -3m

2. 3ab -2ac +4ab

3. 2a -4b +3ab -5a +2b

4. 8x -9y -3xy - 2y -x +4xy

5. 2r -3s -t +3t +3s

simplify each expression to lowest terms. remember, not all of your answers will simplify completely!

Find the given elements if matrix d:

Find parametric equations for the line. (enter your answers as a comma-separated list of equations. let x, y, and z be functions of t.) the line in the direction of the vector 5 i + 5 j − 6k and through the point (−4, 4, −2).

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer