40 points! linda wants to buy 2 sweaters and a pair of sunglasses at wild orchids. each sweater costs the same amount. the sunglasses cost $12. which equation can be used to find the total cost of her purchases?

a. 12s - 2 = c

b. 12s + 2 = c

c. 2s + 12 = c

d. 2s - 12 = c