Can some one plzzz helps me with this

Does the decimal 1.345345634567 appear to have a repeating pattern?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?