Question

Zina spends 1.5 hours setting up her sewing machine and making one hat. The total amount of time spent making hats can be represented by the sequence below.

1.5, 2.25, 3.0, 3.75, ...
Which recursive formula can be used to determine the total amount of time spent making hats based on the total amount of time spent previously?

f(n + 1) = f(n) + 1.5
f(n + 1) = f(n) + 0.75
f(n + 1) = f(n)
f(n + 1) = f(n)

Answer 1

I think the answer choices may r incomplete

However try to find the common difference. You can subtract second term - first term to accomplish this

Then the recursive formula will look something like

f(1) = first term of the sequence
f(n+1) = f(n) + common difference

Answer 2

*may be incomplete