Answer:
Expression: y = 7x + 25
Cost of 12 portraits = AED 109
Explanation:
Given that:
Sitting fee charged by studio = AED 25
Charges for each portrait sheet = AED 7
Let,
x be the number of photographs taken.
y be the total cost.
y = 7x + 25
Total cost for 12 portrait sheets.
x = 12
y = 7(12) + 25
y = 84+25 = AED 109
Hence,
Expression: y = 7x + 25
Cost of 12 portraits = AED 109