By what number should you multiply the first equation to solve using elimination?
–3x – 3y = 27
–9x + 4y = 16
a. 6
b. –3
c. 3
d. –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

What’s the answer ? use the picture to see the problem

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work