Open Up - Grade 8 - Mathematics - Unit 4 - Lesson 15
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Last updated almost 3 years ago
8 Questions
1
1.
Kiran and his cousin work during the summer for a landscaping company. Kiran's cousin has been working for the company longer, so his pay is 30% more than Kiran's. Last week his cousin worked 27 hours, and Kiran worked 23 hours.
Together, they earned $493.85. What is Kiran's hourly pay?(Round to the nearest cent)
8.EE.8.b
8.EE.8.c
1
2.
Decide which story can be represented by the system of equations y=x+6 and x+y=100.
8.EE.8.b
8.EE.8.c
1
3.
Clare and Noah play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty. Clare makes 6 goals and 3 penalties, ending the game with 6 points. Noah earns 8 goals and 9 penalties and ends the game with -22 points.
Write a system of equations that describes Clare and Noah's outcomes. Use x to represent the number of points for a goal and y to represent the number of points for a penalty.
8.EE.8.b
8.EE.8.c
1
4.
Clare and Noah play a game in which they earn the same number of points for each goal and lose the same number of points for each penalty. Clare makes 6 goals and 3 penalties, ending the game with 6 points. Noah earns 8 goals and 9 penalties and ends the game with -22 points.
Solve the system.
8.EE.8.b
8.EE.8.c
1
5.
8.EE.8.b
8.EE.8.c
1
6.
Estimate the coordinates of the point where the two lines meet.
8.EE.8.b
8.EE.8.c
1
7.
Choose two equations that make up the system represented by the graph.
8.EE.8.b
8.EE.8.c
1
8.
Solve the system of equations and confirm the accuracy of your estimate.(Use the Information from questions 6 and 7)