find the cell phone plan that has the best dollar per minute rate.
a) 240 minutes for $50 a month
b) 140 minutes for $70 a month
c) 200 minutes for $45 a month
d) 800 minutes for $250 a month

Which equation could represent the relationship shown in the scatter plot? y=−3x−2 y=−3/4x+10 y=−2/3x+1 y=9x−12 scatter plot with x axis labeled variable x and y axis labeled variable y. points go from upper left to lower right.