Answer:
3 days
Step-by-step explanation:
do this when its a percent move the decimal twice to the left so now its .10 multiply it by 30 days
840... it might be wrong but im just trying to help people XD
The equation from the image is the one
Answer:
y is also doubled.
Step-by-step explanation:
Direct proportionality between
and
means that

or
,
which indicates a linear relationship between
and
because they are related by a constant.
Therefore, if x is doubled, then the new value of
is 



The new value of
is 2 times the previous; therefore,
is doubled as
is doubled.
0.000701 in notation is 7.01 x 10^-4
The number has to be greater than 1 but less than 10. If the number is small then the exponent will be negative. 7.01 is less than 10 and greater than 1. In order to get the number you go to the right 4 times.
I hope this helped