A. A whale is at the surface of the ocean to breathe.
What is the whale's elevation?
b. The whale swims down 300 feet to feed.
What is the whale's elevation now?
C. The whale swims down 150 more feet
more. What is the whale's elevation now?
d. Plot each of the
three elevations
as a point on a
vertical number
line. Label each
point with its
numeric value.

a. 0

b. -300

c. -450

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

1st integer x

2nd integer x+1

3rd integer x+2

4th integer x+3

x+x+1 +x+2+x+3 =74

combine like terms

4x+6 = 74

subtract 6 from each side

4x = 68

x = 17

the integers are 17,18,19,20