In this question, they gave you the system of equations. You just need to use the two of them.
We want to find the m or the number of the multiple-choice questions. So we need to turn our last equation in the form of 'm's by translating the 'f's into 'm's.


If we know the m form of f, we can convert the second equation and find the answer:

Plug in the m value of f:

Distribute the 5:

Subtract -75 from both sides:

Combine like terms:

Divide both sides by -2:

So, we learned that the number of the multiple-choice questions is 12.
Permafrost occurs in areas where the temperature of the ground remains below the freezing mark for two years or more. About a quarter of the Northern Hemisphere's landscape fits this definition. Most of the world's permafrost is found in northern Russia, Canada, Alaska, Iceland, and Scandinavia.
Answer:

Step-by-step explanation:
Given inequality:

We need to solve the given inequality for solutions of
.
In order to solve for the inequality, we will isolate
in one side of the in-equation.
We have,

Subtracting both sides by 7.


Thus, the solution of the given inequality is all real numbers greater than 4.
The solution in interval form can be written as (4,∞).
The graph for the inequality is shown below.
40 x 26.5 /2 is 530which is b
Type it in on the app photomath it will show you the steps on how to do it