HELP ME PLZ
Find the equation of the line (use exact number)
y= x+

Which multiplicative property is being illustrated below? (type commutative, associative, or identity) 5 × 2 × 4 = 2 × 5 × 4

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.

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?