6. [-/1 Points] DETAILS OSINTERALG1 4.2.112. MY NOTES PRACTICE ANOTHER Translate to a system of equations and solve. Sarah left Minneapolis heading east on the interstate at a speed of 65 mph. Her sister followed her on the same route, leaving two hours later and driving at a rate of 75 mph. How long, in hours, will it take for Sarah's sister to catch up to Sarah? hours Additional Materials Reading 7. [-/2 Points] DETAILS OSINTERALG1 4.3.131. MY NOTES PRACTICE ANOTHER Translate to a system of equations and solve. Tickets for the community fair cost $12 for adults and $5 dollars for children. On the first day of the fair, 307 tickets were sold for a total of $2,179. How many adult tickets and how many child tickets were sold? adult tickets child tickets Additional Materials Reading 8. [-/2 Points] DETAILS OSINTERALG1 4.3.145. MY NOTES PRACTICE ANOTHER Translate to a system of equations and solve. Joy is preparing 19 liters of a 25% saline solution. She only has 40% and 10% solution in her lab. How many liters of the 40% and how many liters of the 10% should she mix to make the 25% solution? 40% solution 10% solution Additional Materials Reading 9. [-/2 Points] DETAILS OSINTERALG1 4.3.153. MY NOTES PRACTICE ANOTHER Translate to a system of equations and solve. Arnold invested $64,000, some at 5.5% interest and the rest at 9%. How much did he invest at each rate if he received $5,200 in interest in one year? amount at 5.5% amount at 9%