(3x2 + 5x + 7) - (-4x2 + 3x - 6
1 answer:
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Answer:
a) Total cost =
b) 11 days
Step-by-step explanation:
Given:
(a)
Number of days in hospital =
Cost of operation = $ 500
Cost of nursing per day = $170
∴ Cost of nursing for days = $
Therefore, the expression for total cost of her operation and nursing care is given as,
, where
is the total cost.
(b)
Given:
Total cost of operation =
Using the expression obtained in (a), we solve for .
Plug in 2370 for C and solve for . This gives,
Therefore, Angharad stayed in hospital for 11 days.