A triangle was dilated by a scale factor of 2. If cos a° = 3/5 and segment FD measures 6 units, how long is segment DE? segment DE = 3.6 units
segment DE = 8 units
segment DE = 10 units
segment DE = 12.4 units

15. jiovanni is looking in to two different companies that offer study guides for math exams.test prep 101 charges a $5 flat fee and an additional $0.25 per problem.math charges a $2 flat fee and an additional $0.50 per problem.how many prablems would make the costs of the two companies be equal? varibles: equations/eniqualities{ {