Find the solution to each of these recurrence relations with the given initial conditions. Use an iterative approach such as that used in Sec 2.4 Example 10. Simplify all summations and geometric series.

a) an = 3an-1 – 4, do = 8
b) an = n(-1)"an-1, ao = 6

Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

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

Which of the following transformations will always produce a congruent figure?