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Module 7

Solving Systems of Linear Equations

Carla has been pricing train tickets for a trip to Boston. Three adults and four children cost $78. Five adults and four children pay $123. What are the cost of the adult tickets and child tickets? Adult = $15.00 Child = $12.00
What are the length and width of a rectangular sign if the length exceeds the width by 8 inches and the perimeter is 72 inches? Length = 20 inches Width = 16 inches
Solve for X, Y, and Z via addition method: 3x+4y+9z=42 5x+y+2z=27 4x+2y+6z=34 X = 4 Y= 3 Z=2
Solve via substitution method: 45x+71y=1673 x=23+y x=28.5 y=5.5
A child's bank contains $8.50 worth of change. This change consists of quarters and nickels. How many of each type coin do they have? quarters=30 nickels=20
Created by: William Wills