Given:
The limit problem is:

To find:
The limit of the function by using direct substitution.
Solution:
We have,

Applying limit, we get




Therefore, the correct option is D.
Answer:
Step-by-step explanation:

15h + 80 = 140
If you wanted to solve how many hours he worked:
15h + 80 = 140
15h = 60
h = 4.
Answer:
x = 7
Step-by-step explanation:
Similar figures have sides that are proportional. Setting up a proportion for the sides of the figures will help solve for 'x':

Cross-multiply: 3(x + 1) = 6(x - 3)
Distribute: 3x + 3 = 6x - 18
Combine like terms: 21 = 3x
Solve for 'x': x = 7