Mathematics 31 69 Weekly Assessment Week Eight. Instructions: Provide complete solutions to eacl'l of the followil'lg questions. All numbers should be exact values (i.e. Irrational Numbers as reduced radicals; Rational Numbers expressed as reduced improper fractions no mixed numbers or decimals unless required by context). Assume functions f and g are both concave up 011 the interval I. Show that h (9:) = f (as) + g (1:) is also concave up for all a: e