Given functions are:

and 
Using both functions we need to find value of (f*g)(x)
(f*g)(x) simply means find product of f(x) and g(x) so we will multiply values of each function as shown below:





Hence final answer is
.
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Answer:
7x^2 -x -5
Step-by-step explanation:
(8x^2 - 2x) - (x^2 - x + 5)
Distribute the minus sign
(8x^2 - 2x) - x^2 + x - 5
Combine like terms
7x^2 -x -5
The distance travelled by east bound car is 60 km.
<u>Explanation:</u>
Distance travelled by North bound plane = 63 km
Distance travelled by east bound plane = 87 km
Distance travelled by east bound plane = ?
The trajectory of the plane would form a triangle.
In a right angle triangle:
(hypotenuse)² = (base)² + (height)²
(87)² = (b)² + (63)²
7569 = b² + 3969
b² = 3600
b = 60 km
Therefore, distance travelled by east bound car is 60 km.
Using a calculator, you should find that
-2 & 4/5 = -(2 + 4/5) = -(2+0.8) = -2.8
-31/5 = -6.2
So the unknown number is between -6.2 and -2.8
<h3>Possible whole number answers could be: -6, -5, -4, -3, or -2</h3>
If your teacher allows decimal answers, then there are infinitely many possible ways to answer.