Sharon is rowing a boat upstream. The river is flowing at a speed of 3 miles per hour. Sharon starts rowing at a speed of 8 mile
s per hour, but as she gets tired her speed decreases (at a rate of 1.5 miles per hour, every hour). Graph the equation that fits the description, where y represents Sharon's speed and x represents the time elapsed since the start of her workout.
1 answer:
X represents the elapsed time in hours.y represents the speed in miles per hour.
the equation: y = -1.5 * x + 8
the equation to model this is y = -1.5 * x + 8 - 3
simplify this to get y = -1.5 * x + 5.
She will be traveling at a net speed of 0 miles per hour in 3 and 1/3 hours.
The graph is the attached photo.
the equation: y = -1.5 * x + 8
the equation to model this is y = -1.5 * x + 8 - 3
simplify this to get y = -1.5 * x + 5.
She will be traveling at a net speed of 0 miles per hour in 3 and 1/3 hours.
The graph is the attached photo.
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Usando conceptos de funciones lineales, se encuentra que hizo 5 cortes.
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Una funcion lineale tiene el seguiente formato:
En que:
- a eres lá inclinacion, o sea, lo que es pago por cada corte.
- b eres el intercepto, o sea, lo pagamiento fixo por día.
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- Pagan $50 por corte realizado, o sea,
.
- $25 fixo al día, o sea,
Entonces, la funcion de su recibimiento y, como funcion de su numero de cortes x, es da por:
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- Recibió $275, o sea,
Entonces, el numero de cortes es:
Realizó 5 cortes.
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