Set up a table of values and then graph the line from its parametric form.. x=8+4t. y=-1+8t

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?

Which number line represents the solution set for the inequality - x 24?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.