What is this expression simplified 5(2 + 2k)

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?