Answer:
a) 8½
b) 83⅘
c) 21 7/10
d) 1 ¾
The median is 12.
The arithmetic mean is 12.7
The geometric mean is 11.3
(f+g)(x) = x^2 +10x +7
Step-by-step explanation:
(f+g)(x) = f(x) +g(x) = (15x +7) +(x^2 -5x)
= x^2 +x(15 -5) +7
= x^2 +10x +7
