Please help me figure this out!! Write "four hundred dollars and seventy-two cents" as a fraction (and then reduce)

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

The fraction of defective integrated circuits produced in a photolithography process is being studied. a random sample of 300 circuits is tested, revealing 17 defectives. (a) calculate a 95% two-sided confidence interval on the fraction of defective circuits produced by this particular tool. round the answers to 4 decimal places. less-than-or-equal-to p less-than-or-equal-to (b) calculate a 95% upper confidence bound on the fraction of defective circuits. round the answer to 4 decimal places. p less-than-or-equal-to

Simplify using positive exponents only.