The expression is simplified to 15x5 + 4x4 + 5x3 + 9x2 + 1. What is the value of m?

A. −3
B. 3
C. 5
D. 15

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

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?

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test