Answer:
140
+168xy+49
+280x+154y+105
Step-by-step explanation:
(−14x+−7+−7y)(−10x+−15+−7y)
=(−14x)(−10x)+(−14x)(−15)+(−14x)(−7y)+(−7)(−10x)+(−7)(−15)+(−7)(−7y)+(−7y)(−10x)+(−7y)(−15)+(−7y)(−7y)
It won't be enough, because in cause in total all they want to eat 35 but there's only 32
<u>8th Grade: </u>90 x 0.80 = 72
<u>7th Grade:</u> 80 x 0.75 = 60
Conclusion: 8th Graders like pop music more because 72 out of the 90 in 8th grade Dave surveyed enjoy it, compared to the 60 out of 80 in 7th grade that enjoyed it.
3/8 because its out of 8 contestants n I don't think it includes the 140 audience,including the 30 students being a part if it