The answer is C: first add 2 both sides then divide both sides by -5.
The mean is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
Let the number of sit-ups you have to do Sunday be x. Then the sum of all sit-ups is
100+65+120+150+90+0+x=525+x.
The number of days is 7.
Thus, the mean is

You know that the mean number of sit-ups per day is 100, equate these two means and solve the equation:

Answer: 175 sit-ups
Answer:
Step-by-step explanation:

Answer:
it dilated by two
Step-by-step explanation:
Answer:
WX=36
Step-by-step explanation:
2x+16=7x-29
45=5x
x=9
7x-29
7(9)-29
65-29
36