Me with my math questions anyone? and show your work for both.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x