H e l p y ’ a l l p l e a s e
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.
Answer:
At 5% amount invested = $7,500
At 7% amount invested = $3,500
Step-by-step explanation:
We shall create an equation for this.
Let the amount invested with 5 % interest = "x"
Then remaining amount = 11,000 - x, Since total amount invested = $11,000
(x 5%) + ((11,000-x)
7%) = $620
0.05 x + 770 - 0.07 x = 620
770 - 620 = 0.07 x - 0.05 x
150 = 0.02 x
= x
$7,500 = x
Therefore, amount invested at 5% = $7,500
At 7% = $11,000 - $7,500 = $3,500