Answer:
Step-by-step explanation:
If y varies directly with x, it is:
Constant is -2, it means k= -2
the answer is d
hope this helps
Answer:
The explicit formula

The recursive formula
for 
if 
Step-by-step explanation:
If a sequence is arithmetical then the difference between any of its consecutive terms will be constant
3, 3.25, 3.5, 3.75,

The difference between the consecutive terms remains constant so the sequence is arithmetic.
The explicit formula for an arithmetic sequence is:

Where d is the constant difference between the terms.

is the first term of the sequence.

So

Finally, the recursive formula is:

First you have to combine like terms
(7x and 3x)
using the same sign (subtraction)
4x
then (5 and 2) also still using the same sign (subtraction)
3
4x-3