I only have the answer for 3 and i believe it is 20,090
There is a formula for adding consecutive numbers:
total = n*(n+1)/2
total = 80*(81)/2
total = 3,240
I’m not sure if this is correct but this is the way i would solve it.
first, make an equation with the given information
2x-3=30
Then, add three to both sides
2x=33
Finally, divide both sides by 2
x= 16.5
x represents the age of maggie so all you have to do is plug the solution into the equation to check your answer.
2(16.5)-3= 30
F^-1(x)=12+x hope this is what you need
You jogged 2/3 of a mile. 1/3 plus 1/3 equals 2/3.