Answer:
-30
Step-by-step explanation:
substitute the values and get -30
Think of PEMDAS, or Please Excuse My Dear Aunt Sally. Which is Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction in that order.
Distributive property, since 3(2x) you distribute and get 6x
Answer:
a = 5 or a = -5
Step-by-step explanation:
We add up all those numbers (excluding 30) and divide by the number of numbers (9). This results in 78.8 (round up to 79).
79-74 = 5. So the mean has increased by 5 points. (C)
