Exercises (a) Solve, p^2+q^2 = 1, x/3 = y/4 = z/5. Explain the uniqueness or
otherwise of the solution.

At which value in the domain does f(x) =0?

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?