Which line models the data given below?
x y
-2 0
-1 -2
0 -4
6 -16
a. y-2 = -2(x - 1)
b. y-2 =2(x - 1)
c. y + 2 = -2(x + 1)
d. y + 2= 2( x + 1)

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Simplify the expression. -2/5(10+15m-20n)