Answer:
ISO 1600
Step-by-step explanation:
"Three stops" means the picture is overexposed by a factor of 2^3 = 8. Each f-stop increase halves the exposure, so increasing from 5.6 through 8 to 11 means you have cut the exposure by a factor of 4 with the f-stop change.
Each halving of the shutter-open time also cuts the exposure in half, so reducing the shutter speed from 1/30 to 1/250 cuts the exposure by a factor of about 8.
The adjustments of shutter speed and f-stop have decreased the exposure by a factor of 4·8 = 32, which is a factor of 4 more than the factor of 8 you needed. (The shutter speed change by itself would have been sufficient.)
So, to compensate for the much smaller exposure, you need faster film, by a factor of 4. The film needs to go from ISO 400 to ISO 1600.
Answer:
is the question correct, you end up with no X's
3x -4x + x = 9
or I've got it wrong
Answer:
Step-by-step explanation:
Given
17 % of the drivers stopped have invalid licenses
n=24 drivers are stopped
using Binomial distribution
here p=0.17
q=1-0.17=0.83
(a)none will have valid license i.e. r=0
(b)Exactly one have invalid license i.e. r=1
(c)At least 2 will have invalid license i.e. 
There are only 1*26 and 2*13 so there is no answer unless you allow decimals.
$299 and $199 adds up to 498, including the tax rate 7.5% and your total is $535.35
