Answer:
x = 7.7
Option B
Step-by-step explanation:

∴ value of x is 7.7
Answer:
2.54. Calculate the approximate value:2.6 *
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
To solve, use inverse operations:

Now we solve for both +/- 7.
x+6=7
x=1
x+6=-7
x=-13
Answer is 91.56 You add all the numbers up and divide by 9(There are 9 numbers in the sequence).