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Please help I’m struggling!
1.
The cost of a luncheon is $100.00 plus $12.00 per person.
What is the rate of change for this relation?
A. 100
B. 12
C. 88
D. 8.33
2.
Maya's distance from the finish line in a marathon is given by the formula
D = 60-11t, what t is the time in minutes and D is the distance from the finish line in metres.
Approximately how far from the finish line is Maya after 2.4 min?
1: 25 km
B. 30 km
C. 34 km
D. 47 km

Respuesta :

Answer:

See below

Step-by-step explanation:

The rate of change is how much does it change for each person added

   this is equal to  $ 12

Sub in 2.4 for t  to find D

   D = 60 - 11 t

    D = 60 - 11 (2.4) = 33.6 meters  

 your question SHOULD read:   D is the distance from the finish line in KILOmetres.     then the answer would be 33.6 km  instead of 33.6 m

      33.6 km is approximately 34 km

(I also suspect that   t should be in HOURS not minutes and 2.4 should be hours.... this would give her a finish time of 5.45 HOURS for a marathon instead of 5.45 MINUTES !!! )

             

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