Question

1) Mr,Yang went to the market to purchase milk. Each gallon of milk cost $2.50. The explicit rule that represents the total cost is f(n)=2.5n.
2) Determine the first term and the common difference. Write the explicit rule.

Answer 1

1.

1 = 2.5

2 = 5

3 = 7.5

4 = 10

The n represents how many gallons of milk Mr. Yang is purchasing.

F(6) would be 15. This value means it costs $15 for 6 gallons of milk. :))

2.

f(1) = 1.

The Common Difference is 5, since 11 + 5 = 16 and so on and so forth.

The explicit rule is

f(n) = 1n x 5

((If I got anything wrong on here, it would probably be the explicit rule. Sorry if it is incorrect!))