Answer:
#5a: After 3 weeks, they will have a total score of 415 points.
#5b: (Full work below) Kris' score: 520 ; Justin's score: 450
Step-by-step explanation:
[tex]Kris: y=370+15x\\Justin: y=400+5x[/tex]
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#5b FULL WORK BELOW
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x=number of weeks: 10
y= total score
Use your equations.
[tex]y=370+15x\\y=370+15(10)\\y=370+150\\y=520[/tex]
Kris will have 520 points.
[tex]y=400+5x\\y=400+5(10)\\y=400+50\\y=450[/tex]
Justin will have 450 points.
