Someone i beg of you help me with this please:
Isabella wants to use dragons and unicorns by giving them joke books. She wants to amuse a total of at least 14 dragons and unicorns (Condition A), with 108 joke books at most (condition B). The graph represents the constraints on the number of dragons D and unicorns U Isabella amuses. Isabella amuses 2 dragons. How many unicorns can she amuse to meet both her constraints?
A.) Exactly 15 unicorns
B.) Isabella doesn’t have enough joke booked left to amuse any unicorns
C.) At least 14 unicorns and at most 18 unicorns
D.6 At lest 12 unicorns and at most 15 unicorns

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)