82
Explanation
the average is calculated by dividing the sum of the values in the set by their number.
Step 1
Let

Step 2
apply the equation

so, the answer is 82
First you need to distribute the 2 into each equation and then add like terms. the answer is 6x + 8
What question are trying to ask?
Answer:
9.50 + 0.20e = 12.50
Step-by-step explanation:
you start with the 9.50, base price. Then with every photo you pay 0.20, since we don't know how many it is we put a variable. Then we know that those two combined is 12.50, so yeah.
Answer:
H and J are not true
Step-by-step explanation:
H) 12/65 ≠ 55/300
J) 11/65 ≠ 60/400