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Grade 8 Math: Modeling with Linear Systems & Functions
Name
Date
1.
Write system for: tickets $8 and $12 total $52, 5 tickets.
2.
Solve: adult ticket $10, child $6, 4 tickets $32.
3.
Cost function C=5x+20: 20 represents ___.
4.
Two numbers sum 30, difference 6. Larger?
5.
y=3x and x+y=24. x?
6.
Phone plan A: $30+0.10/text. Plan B: $20+0.15/text. Equal cost texts?
7.
Perimeter 40, length 4 more than width. Width?
8.
f(x)=4x models items at $4. Cost of 7 items?
9.
Adult $10, child $6, 4 tickets $32. Adults?
10.
Phone plans equal at t?
11.
Consecutive sum 45. Middle?
12.
f(x)=2x+10, f(5)?
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