Catherine chao, director of marketing research, is evaluating consumer acceptance of a new toothpaste package. her staff reports that 17% of a random sample of 200 households prefers the new package to all other package designs. if catherine concludes that 17% of all households prefer the new package, she is using ) a point estimateb) a range estimatec) a statistical parameterd) an interval estimatee) an exact estimate

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!