Answer:
r = 10q/(p + 30)
so put p+30 in the blank
Step-by-step explanation:
p=10(q - 3r)/r
p = (10q - 30r)/r
pr = 10q - 30r
pr + 30r = 10q
r(p + 30) = 10q
r = 10q/(p + 30)
I'm not sure but I think the answer might be, (3x-1)^2/9
After clarification we see the respective diameters are


We're asked about the ratio

Now we can go through the choices.
A. If a = 4 and b = 6, then cell a is 100 times greater than cell b.

It would be more proper to say the diameter of cell A is 100 times the diameter of cell B, but yes, this is TRUE.
B. If a = 4 and b = 6, then cell b is 100 times greater than cell a.
FALSE. 10 to the minus 4 is 100 times bigger than 10 to the minus 6, so a is bigger.
C. If a = 4 and b = 6, then cell a is 2 times greater than cell b.
FALSE. We already calculated its 100 times bigger.
D. If a = 4 and b = 6, then cell b is 2 times greater than cell a.
FALSE.
The domain is all real numbers
The Range is y > 0
AS x increases by 1 the value of y is 1/7 of previous value
I believe the answer is B: 3 + 7 + (-10).