Answer the MATH question pleaaseee

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

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

Find the nonpermissible replacement for binthis expression.b2/5b +5