At southside middle school, 40% of the students play an instrument. there are 305 students. how many students play an instrument?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.