The scatterplot shows the sales, in dollars, of snow cones in relation to the outside temperature, in degrees celsius. according to the line of best fit, which is the closest approximation of sales when the outside temperature is 21 °c?
a) $420
b) $450
c) $480
d) $520

Of 400 people at the school carnival, 95% are students and the rest are teachers. a. how many students are at the school carnival? b. if 55% of the students at the school carnival are boys, how many are girls? c. how many teachers are at the school carnival? d. if 35% of the teachers are male and the rest are female, how many female teachers are at the carnival?