Review the table showing the height of a drooping rope in terms of horizontal distance from its left end. Horizontal Distance (ft)

Height (ft)

0

3

0.5

2.5

1

2.25

2

2

3

2.25

3.5

2.5

4

3

Applying a quadratic regression model y = ax2 + bx + c, what are the values of a, b, and c?

a = 0.248, b = 0.994, c = 2.979
a = 2.979, b = 0.994, c = 0.248
a = 0.248, b = –0.994, c = 2.979
a = 2.979, b = –0.994, c = 0.248

Which themes are portrayed in this excerpt from leo tolstoy’s the death of ivan ilyich? praskovya fedorovna came of a good family, was not bad looking, and had some little property. ivan ilyich might have aspired to a more brilliant match, but even this was good. he had his salary, and she, he hoped, would have an equal income. she was well connected, and was a sweet, pretty, and thoroughly correct young woman. to say that ivan ilyich married because he fell in love with praskovya fedorovna and found that she sympathized with his views of life would be as incorrect as to say that he married because his social circle approved of the match. he was swayed by both these considerations: the marriage gave him personal satisfaction, and at the same time it was considered the right thing by the most highly placed of his associates. so ivan ilyich got married. conforming to social conventions criticism of a middle class lifestyle the destructive impact of loneliness struggling to face reality the necessity of companionship

Ineed to know the answer to this algebra question.

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?