Fiona has proved that a function, f(x), is an arithmetic sequence. How did she prove that? (1 point) She showed that an explicit formula could be created. She showed that a recursive formula could be created. She showed that f(n) ÷ f(n − 1) was a constant ratio. She showed that f(n) − f(n − 1) was a constant difference.

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

what

i saw this question before, dont know the asnwer srry

step-by-step explanation: