Pythagorean theorem
c2 = a2 + b2
71^2 = 43^2 + b2
5041 = 1849 + b2
3192 = b2
b = 56.5 which is answer choice d
The original price would be $72. Hope this is right, and helps you.
Angle M equals 45°
Angle N equals 15°
She needs 0.1 because 4x4 is 16. :)
Answer:
rate of change can be used in a real life problem such as the rate that a pool fills up with water.