
Writing linear equations from word problems
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Mathematics
8th Grade
CCSS covered
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16 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?
The Roaming Cell Phone Company cobra $ 15.00 por mes más $ 0.20 por minuto de uso de tiempo aire. Si Juanita usa x minutos de tiempo aire, ¿cuál es una ecuación que se puede usar para determinar su factura mensual de teléfono celular (C)?
C = 15 + 0.20x
C =15 (0.20x)
C = 15 + x + 0.20
C = 0.20 + 15x
Tags
CCSS.HSF.LE.A.2
CCSS.HSF.BF.A.1
CCSS.HSA.CED.A.1
CCSS.HSA.SSE.A.1
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Bob's Plumbing charges $15 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation?
Bob's Plumbing cobra $ 15 por hora más una tarifa de servicio de $ 40 por venir a su casa. ¿Qué ecuación modela esta situación?
y = 15x + 40
y = 40x + 15
y = 15x
y = 15x - 40
Tags
CCSS.HSF.LE.A.2
CCSS.8.F.B.4
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
A holiday meal cost $12.50 a person plus a delivery fee of $30. Which equation represents the amount a holiday meal costs(y), including delivery, for x people?
Una comida festiva cuesta $ 12.50 por persona más una tarifa de entrega de $ 30. ¿Qué ecuación representa la cantidad que cuesta una comida festiva (y), incluida la entrega, para x personas?
y = 12.50 + 30x
y = 30 + 12.50x
y = 12.50 + 30
12.50x = 30
Tags
CCSS.6.EE.C.9
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Ace Telecommunications charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for it phone service. Which equation can be used to find c, the total cost for one month when m, minutes are used?
Ace Telecommunications cobra $ 0.12 por minuto de uso del teléfono más una tarifa de servicio mensual de $ 8.00 por su servicio telefónico. ¿Qué ecuación se puede usar para encontrar c, el costo total de un mes cuando se usan m, minutos?
c = 0.12m + 8m
c = 8m + 0.12m
c = 0.12m + 8
c = 0.20m
Tags
CCSS.HSF.LE.A.2
CCSS.8.F.B.4
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation to represent the given situation.
Suponga que el nivel del agua de un río es de 34 pies y que retrocede a razón de 0.5 pies por día. Escribe una ecuación para representar la situación dada.
y = -0.5x + 34
y = -34x + 0.5
y - 34 = 0.5(x - 1)
34x - 0.5y = 33.5
Tags
CCSS.HSF.LE.A.2
CCSS.HSF.BF.A.1
CCSS.HSA.CED.A.2
CCSS.HSF.LE.A.1
CCSS.HSA.REI.D.10
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A plumber charges $25 for a service call plus $50 per hour of service. Write an equation for the given situation.
Un plomero cobra $ 25 por una llamada de servicio más $ 50 por hora de servicio. Escribe una ecuación para la situación dada.
y = 50x + 25
y = 25x + 50
y - 50 = 1(x - 25)
25x + 50y = 75
Tags
CCSS.6.EE.C.9
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A car is driving down from the top of a Colorado mountain. The elevation at the top of the mountain is 13,500 feet. Every minute of driving, the car’s elevation decreases by 150 feet. Write an equation to represent the given situation.
Un automóvil está bajando desde la cima de una montaña de Colorado. La elevación en la cima de la montaña es de 13,500 pies. Cada minuto de conducción, la elevación del automóvil disminuye en 150 pies. Escribe una ecuación para representar la situación dada.
y = 150x + 13,500
y = -150x + 13,500
y - 13,500 = -(x - 150)
150x + 13,500y = 13,750
Tags
CCSS.HSF.LE.A.2
CCSS.HSF.BF.A.1
CCSS.HSA.CED.A.2
CCSS.HSF.LE.A.1
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