What is the first step in solving the linear system { 2 x − 3 y = 11 − x + 5 y = − 9 by the substitution method in the most efficient way? A.
Solve the first equation for x.

B.
Solve the first equation for y.

C.
Solve the second equation for x.

D.
Solve the second equation for y.

Someone . me. compound probability

As part of an annual fundraiser to raise money for diabetes research, diane joined a bikeathon. the track she biked on was 1,920 yards long. diane biked 38.5 laps. her sponsors agreed to donate an amount of money for each mile she biked. how many miles did she bike? first fill in the blanks on the left side using the ratios shown. then write your answer. given ratios: 5280ft / 1 mi , 1 mi /5280 ft , 1,920 yards / 1 lap , 1 lap / 1,920 yards , 3 ft / 1 yard , 1 yard / 3 ft. blanks: 38.5 laps / 1 yard x (blank) x (blank) x (blank) = (blank) miles i'm really confused on how to do this, and the explanations aren't exactly . if you could walk me through how to do this, it would be greatly appreciated.

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83