Please help me solve the file attached on Investigation on Sequences.

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?