Problem
1. A firm's profit (in £) is given by the expression 7.5q - 1650. What profit will it make when q is 500?
2. If income tax is levied at a rate of 22% on annual income over £5,400 then:
(a) Write an expression for net monthly salary in terms of gross monthly salary (assumed to be greater than £450), and
(b) Evaluate it if gross monthly salary is £2,650.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.