(Algebra Word Problems) Janice, Rene, and Lucinda shared a summer
 babysitting job. Janice babysat twice as many hours as Rene. Lucinda
 babysat 10 more hours than Janice. If r represents the number of hours
 that Rene babysat, which expression represents the number of hours that
 Lucinda babysat? *
 R+10
 2r + 10
 2(r + 10)
 10 x 20