(0,-8)
Explanation: In y=mx + b, m represents the slope of the line and b represents the y intercept, since b is -8, it will cross the y-axis at (0,-8)
Answer:

Step-by-step explanation:
Let the number be x.
Translating the word problem into an algebraic equation, we have;
Opening the bracket, we have;

Collecting like terms, we have;

Answer:
108
Step-by-step explanation:
we first add 7+8=15 then 15×2=30 30+6=36 36×2=108
The undefined term in geometry used for the definition of an angle are line or ray and point. Two lines extend to meet at a common point or the two rays share the same endpoint. The common point between the two lines or the two rays of the angle<span> is called the vertex.</span>