The answer to this is (x + 7)(x + 8)
We will use Area... Because Area=L*B*H of the building
So easy y=1/5x cuz 20 times 1/5=4
Answer:
With the listed scores, he already has an average of 90.6 He needs to score a minimum of 87 to keep an average of 90.
The dot products of the two functions will be given as follows:
f(x)=x^4-9
g(x)=x^3+9
thus
(f*g)(x)
=(x^4-9)(x^3+9)
=x^3(x^4-9)+9(x^4-9)
=x^7-9x^3+9x^4-81
hence the answer is:
(f*g)(x)=x^7-9x63+9x^4-81