Answer:
1) they equation they solved was correct as they were able to do the correct operation to yield their answer.
2)this problem should be approached by subbing in the correct X values and y values into their rightful position, by doing this U will yrild the correct answer
60%. You count how many total (15) and then how many got below a 90 (9) and then divide 9 by 15.
You're correct: the logical OR operator is true whenever one of the two options is true.
So, the sales of shoes OR socks is given by the 52 and 9%, which together evaluates to 
U have to substitute in the values of x to get the values of y
answers in order from left to right:
4.5, 4, 3.5, 3, 2.5, 2
ex of solving process:
x+2y=7
(-2)+2y=7
2y=9
y=4.5
