Justina sometimes babysits for Mrs. Friesen so she can help her husband in the greenhouse. Mrs. Frieson pays her $2.00 per hour for looking after the 4-year-old and the 3-year-old. Mrs friesen Usually takes the baby to the greenhouse with her, but if she asks Justiana to care for all 3 children, she pays her $2.50 an hour. After Justina has cared for the two older children in 3 hrs, Mrs, friesen Brought the baby in for Justina to look after for anothor hour. How much did she say Justina for baby-sitting that day. PKEASEE HELP!! I WILL MARK BRAINLIEST! THIS IS A MATH WORD PROMBLEM. PLEASEE HELP 20 POINTS!!