Will ! ! during exercise, the recommended maximum heart rate in beats per minute is modeled by the formula m=176-0.8a, where m is the maximum heart rate and a is the persons age. approximately, at what age would you have a recommended heart rate in beats per minute of 135? a. 25 years b. 39 years c. 51 years d. 53 years

part a) draw two triangles, translating one of them to the right.

part b) Consider triangles ΔYXB and ΔYZA. In these triangles:

Therefore, these two triangles have two congruent angles adjacent to congruent sides. By the ASA Postulate, ΔYXB≅ΔYZA.

ASA Postulate: If two angles and the included side of one triangle are congruent to two angles and the included side of a second triangle, then the triangles are congruent.

part c) flow chart proof: