What's the number order from least to geastest?
0.5,0.05,5/8

Given this information, which expression must represent the value of b?

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.