Nikki gathered data about the length of time she spent listening to the radio and the number of commercials she heard. she organized the data
in a scatter plot, where x represents the minutes spent listening and y represents the number of commercials. then she used the graphing tool
to find the equation of the line of best fit:
y = 0.338x - 1.387
based on the line of best fit, for approximately how many minutes will nikki need to listen to the radio to hear 20 commercials?

a.10
b.55
c.63
d.72