Questions:
Systems of Linear Equations
1-30 morpho granadensis@$4.15 per pupa
33 battus polydamus@$1.50 per pupa
What is the total cost
2-A Coast-Guard patrol boat travels 4 hr on a trip downstream with a 6-mph current. The return trip against the same current takes 5 hr. Find the speed of the boat in still water
3-Tim's student loans totaled $15,500. Part was a Perkins loan made at 10% interest and the rest was a Stafford loan made at 5% interest. After one year, Tim's loan accumulated $925 in interest. What was the amount of each loan?