Please help I will mark brainlest

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

15 points ! ~ see if you know the answer to both you!

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