What is (are) the x-value(s) that solve the system of equations y = x and y = 2x – 1?

Write 17/20 as a decimal and as a percent.

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?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)