Lashonda purchased a prepaid phone card for $20. Long distance calls cost 8 cents a minute using this card. Lashonda used her ca
1 answer:
We know that
• Lashonda purchased a prepaid phone card for $20.
,• Long-distance calls cost 8 cents a minute.
,• The remaining credit on her card is $17.12.
This problem can be expressed as
Where <em>x</em> is the number of minutes.
We solve the equation for <em>x</em>
Then, we divide by -0.08 the equation
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Answer:
Step-by-step explanation:
slope intercept form => Y = mx + b
find m... the slope by using any two points on the line
p1 = (0,5) by inspection
p2=(4,6) by inspection
find m = y2-y1 / x2-x1
m = 6 - 5 / 4 - 0
m =1 / 4
then use the slope intercept formula
y = 1/4x + 5 for your answer. we know b = 5 b/c thats where the line crosses the y axis.
y = x + 5 is the answer
Answer:
Workers of army contract were more productive.
Step-by-step explanation:
To determine on which contract the workers were more productive compute the work done per hour by the workers for both contracts.
- <u>Navy Contract</u>:
Number of devices = 2,300
Number of workers = 25
Number of weeks = 2 weeks
Number of hours per week = 40
The number of hours it took 25 workers to produce 2300 devices is =
Then number of devices produced in 1 hour is =
- <u>Army Contract</u>:
Number of devices = 5,500
Number of workers = 35
Number of weeks = 3 weeks
Number of hours per week = 40
The number of hours it took 35 workers to produce 5500 devices is =
Then number of devices produced in 1 hour is =
The workers for the army contract are more productive since they produce 1.31 devices per hour whereas the workers for navy contract produces 1.15 devices per hour.