To write a formula for the total cost (C) of Mary's holiday when it lasts n days, you can use the information provided:
Total cost of flights = £380
Other expenses per day = £120
So, the formula for the total cost (C) of Mary's holiday when it lasts n days can be written as:
�
=
380
+
120
�
C=380+120n
Answer:
£C = 120n+380
Step-by-step explanation:
Since it's £120 for each day of her holiday, you can multiply that by n to figure out the total cost of her other expenses per day, since n is the number of days her holiday is. You can write this as 120n, which essentially means 120*n. Since it is £380 total for the flights, you can just add that cost to the equation, making your final equation £C=120n+380.
