77 and 791 are both relatively prime numbers
Answer:
-4 to 0 (both -4 and 0 are included in the range because of the dots)
There are three groups of people: 25 years old and younger, between 25 to 50, and 50 years old and older. Their fractions must equal to 1 because these three together form the whole.
1 = 1/3 + 2/7 + x
where x is the fraction for people ages 25 to 50 years old
x = 8/21
So, the actual number of people ages 25 to 50 years old is:
84(8/21) = 32 people
To find the inverse, interchange the variables and solve for y.
f^-1 (x) = 4 + x/2
Since the point satisfies the equation
y = x +3
you have
b = (-3/5) +3 = 12/5 . . . . . . . matches A. 12/5
