Answer :
Y= 10x+20
Y- equation
10x- adding 10 each month
20- starting value
Y- equation
10x- adding 10 each month
20- starting value
The given data in above statement :
Cost / month = $10
Down payment at joining = $20
Total cost (y) :
(cost / month × no. of months) + (down payment)
= ($10 × x) + $20
hence,
- y = 10x + 20