Evaluating Expressions and Understanding PEMDAS

What does the variable 'm' represent in the first example?

• 1

• 7

• 3

• 5

What is the result of substituting m=5 and n=1 in the expression m + n + m?

• 13

• 11

• 10

• 12

In the second example, what is the result of evaluating c/2 - x when c=-2 and x=-3?

• 1

• 2

• 4

• 3

What does KCO stand for?

• Keep, Change, Order

• Keep, Calculate, Order

• Keep, Change, Opposite

• Keep, Calculate, Opposite

What is the result of evaluating the expression j - k * j when j=6 and k=-3?

• 36

• 30

• 24

• 18

What is the value of 3 squared?

• 6

• 9

• 12

• 15

What is the result of evaluating the expression k - 2 - m^2 when k=-1 and m=3?

• -12

• -11

• -9

• -7

What is the result of evaluating the expression c + x - y^2 when c=-1, x=-5, and y=2?

• -10

• -12

• -8

• -6

What is the discriminant of the expression b^2 - 4ac when b=3, a=2, and c=-2?

• 36

• 16

• 9

• 25

What is the result of evaluating the discriminant when b=-5, a=-3, and c=10?

• 120

• 160

• 145

• 100