EXTRA POINTS! PLEASE ANSWER EACH QUESTION TIMELY! :) Stuart owns 23 1/2 acres of land. He is going to keep 2 1/2 acres. The rest he wants to sell as 3/4-acre lots. How many lots does Stuart have available to sell?

Multiplying -12 by which number results in a product less than -12?

What is the value of the expression –2x + y if x = –2 and y = –6?

What is the value of the expression –x + 3y, if x = 5 and y = –4?

In a town, the average daily temperatures were recorded in the table below.

Number of Days | Average Temperature
3 -12 degrees C
2 -2 degrees C
5 1 degrees C

What was the average daily temperature for the entire 10-day period?