A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh gra
2 answers:
Answer: Second option is correct.
Step-by-step explanation:
Since we have given that
Number of sixth graders students = 160
Number of seventh graders students = 180
Number of eighth graders students = 140
If 9 seventh graders were part of a random sample of the population chosen to participate in a survey.
Let Number of sixth graders should be chosen be 'x'.
Since there will be direct proportion .
Hence, Second option is correct.
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Step-by-step explanation:
The linear parent function is :
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Answer :
The value of number of hours overtime per week will he needed to achieve his earning goal = 5 hours
Step-by-step explanation:
Payment for first 40 hours = $ 32 per hour
Payment over 40 hours = $ 48 per hour
Eli’s goal is to earn = $ 1520 per week ------- (1)
Total payment for first 40 hours = 32 × 40 = $ 1280 ------ (2)
Suppose person worked hours in overtime, then
The total payment for hours = 48 ×
= $ 48
------------ (3)
Total earnings of the person in a week ⇒ $ 1280 + $ 48 = $ 1520
⇒ 1280 + 48 = 1520
⇒ 48 = 1520 - 1280
⇒ 48 = 240
⇒ = 5 hours
This is the value of number of hours overtime per week will he needed to achieve his earning goal.