Lisa made $300 in 6 hours find the unit rate

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

What is the solution to the division problem below x3+x2-11x+4/x+4

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog