Is x=3 a solution of 3x-5+4x-9

Abus ride for a senior citizen cost $1.25. a monthly pass costs $35. write and inequality that represents the number of times a senior citizen must ride the bus for the monthly pass to be a better deal.

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs

Write the factored form of this trinomial 9x^2+18x-7