0.7 is the rational number
Pretend these are coordinates that you can use to find the slope of the line.
(10, 40) and (15, 60). Fit these into the slope formula to find the slope of the line you are looking for:

and the slope is 4. Now use one of the points and the slope of 4 to solve for b, the y-intercept:
40 = 4(10) + b so b = 0. The equation of the line then is y = 4x + 0 or just
y = 4x
The value of seven is in the thousands place and is 10 time the number seven if it were at the hundreds place, which is where 2 is.
7000=10 x 700
7000=7000
The graph shows a slope 7/10, which is 0.7. Only 8/11 (=0.72727) is greater than 0.7, so the answer is y=(8/11)x
Answer:
V≈33.51
although I don't have an explanation, sorry, if you look up "how to find the volume of a sphere" on google, it will give you the answer