At Pizza Pi, 48% of the pizzas made last week had extra cheese. If 12 pizzas had extra cheese, how many pizzas in all were made last week? There were
pizzas made last week.

What is the simplified expression for 6(2(y+x))

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.

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz