What is the slope of the line ? real answers only

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu