Roxanne is using successive approximation to solve this equation. She started from a graph, where she found the solution to be between and 0. Using the lower and upper bounds from the graph, Roxanne started the first iteration of successive approximation.

Step 1
Rewrite the equation so it equals zero.

Step 2 Evaluate the rewritten equation at the lower and upper bounds.
Since the solution to the equation represents a zero, one bound should yield a negative value and the other should produce a positive value.

Step 3 Take the average of the lower and upper bounds from the graph.

Step 4 Evaluate the rewritten equation at .

Step 5 Since this value is positive, replace the previous lower bound so the bounds are now and .
Where did Roxanne make a mistake, and what was the error?

A.
Roxanne made a mistake in step 2. The actual evaluation of the rewritten equation at is .
B.
Roxanne made a mistake in step 4. The actual evaluation of the rewritten equation is approximately .
C.
Roxanne made a mistake in step 3. The average of the two bounds is .
D.
Roxanne made a mistake at step 5. She should have used as the new upper bound.

3(10x-y)-5(x-y^2) need this solved asap

What is the domain and range of each function 1. x (3, 5, 7, 8, 11) y ( 6, 7, 7, 9, 14) 2. x (-3, -1, 2, 5, 7) y (9, 5, 4, -5, -7)

In δabc shown below, ∠bac is congruent to ∠bca: triangle abc, where angles a and c are congruent given: base ∠bac and ∠acb are congruent. prove: δabc is an isosceles triangle. when completed (fill in the blanks), the following paragraph proves that line segment ab is congruent to line segment bc making δabc an isosceles triangle. (4 points) construct a perpendicular bisector from point b to line segment ac . label the point of intersection between this perpendicular bisector and line segment ac as point d: m∠bda and m∠bdc is 90° by the definition of a perpendicular bisector. ∠bda is congruent to ∠bdc by the definition of congruent angles. line segment ad is congruent to line segment dc by by the definition of a perpendicular bisector. δbad is congruent to δbcd by the line segment ab is congruent to line segment bc because consequently, δabc is isosceles by definition of an isosceles triangle. 1. corresponding parts of congruent triangles are congruent (cpctc) 2. the definition of a perpendicular bisector 1. the definition of a perpendicular bisector 2. the definition of congruent angles 1. the definition of congruent angles 2. the definition of a perpendicular bisector 1. angle-side-angle (asa) postulate 2. corresponding parts of congruent triangles are congruent (cpctc)