F(x) = 7x2 – 28x + 21?
1 answer:
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Answer:
At least 1.72 miles per day.
Step-by-step explanation:
Given: Goal of running is at least 50 miles in a month.
Andrea have already run 7 miles.
Days left in the month is 25.
As given, Andrea have already run 7 miles.
∴ Andrea need to run this month=
Days remaining this month is 25.
Now, finding miles need to run each day to meet her goal.
Miles need to run each day=
⇒ Miles need to run each day=
∴ Andrea need to run at least 1.72 miles to meet her goal this month.