1. is the set of ordered pares a function? explain why or why not. [(1,3),(2,5),(3,7),(1 7)}*

2- Find f(8) if f(x) = 3x - 4.*

3- What is the slope of the line that goes through the points (12,18) and (9,12)*

9 x 8 divided by (5-3)=36

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

first one because it can't have a fraction in it

step-by-step explanation: