Q9) When working on a problem recently, Mya saw the polynomial expression 4 - 3x”. She decided to re - write it as - 3x + 4. Which property of real numbers justifies (allows) Mya's action? Explain your
answer.

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up