Answer:

Step-by-step explanation:
A linear function has the following format:

In which a is the slope(rate of change) and b is the y-intercept, that is, the value of y when x = 0.
Rate of change of 3
This means that 
So

A solution at (6, 12).
This means that when x = 6, y = 12. So



The linear function is:

The area= (20x14)/2
So, 20 times 14, divided by 2.
Answer: 70
Step-by-step explanation:
5 multiplied by 7 is 35.
35 - 12 is 23.
23 + 56 is 79.
79 - 9 is 70.
Answer:
Step-by-step explanation:
-2+ (-7) = -2 - 7
We will use tangent here as we are finding the opposite with the adjacent given.
So we can simply just put this into a calculator:
tan(68°) × 7 cm = AC
tan(68°) × 7 cm = 17.3 cm