The price, p , for different size orders of custom posters of the swim team picture, n , is the given table.

number of posters ordered and the prices// 1= $70 5=$150 20=$450 50=$1050

can a linear equation be used to model the situation? if it can, what is the slope and the y-intercept of the equation?

a) linear: slope 30, y-intercept= 0

b) linear: slope 20, y-intercept= 50

c) linear: slope 20, y-intercept= 0

d) a linear equation cannot be used