Answer:
E
Step-by-step explanation:
-5x+7=1
-5x=-6
x= 1.2
E
Answer:

Step-by-step explanation:
Given
Variation: Directly Proportional
Insects = 10 million when Rate = 2 million
i.e.
when 
Required
Determine the differential equation for the scenario
The variation can be represented as:

Which means that the rate at which the insects increase with time is directly proportional to the number of insects
Convert to equation


Substitute values for
and P

Make k the subject



Substitute
for k in 


<span>Domain is all values of x that can make a function valid
so, x is all real values
and range is all values of f(x) for the above domain
So, range is also all real values</span>
Answer:
1/3
Step-by-step explanation:
9:6
3:2
9/3 = 3
6/2 = 3
9 x (1/3) = 3
6 x (1/3) = 2
scale factor is 1/3