If the Mean Value Theorem is applied to the function f(x) = ln(x − 5) on the interval [6, 10], then what is the number c that must exist in (6, 10)?
A. 8.915
B. 8.911
C. 7.485
D. 8

What is the reflection image of (5,-3) across the line y = -x?

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

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?