A)
Let X be the food expenditure of a family.
Let the population mean of an expenditure of a family be.
Let the population standard deviation of an expenditure of a family be.
The proportion families spend more than $30 but less than $490 per month on food is,
Answer:
4
Step-by-step explanation:
Answer:
- rate of change: $8 per hour; the per-hour rental charge
- initial value: $75; the deposit on the machine
Step-by-step explanation:
The cost to rent the machine is given as ...
total cost = deposit + ($8 /hour)×(number of hours)
The cost for 5 hours is given ans $115, so we have ...
115 = deposit + 8(5)
75 = deposit . . . . . . . . subtract 40
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The "rate of change" is given as $8 per hour, the hourly rental charge.
The "initial value" is called <em>the deposit</em>. It is found to be $75.
Answer:
1.10
Step-by-step explanation:
40,000 times 1/10 will result in the product of 4,000.
