Answer:
3.2?? I am kinda confused
Step-by-step explanation:
a. factor A = x^2 -30x + 225 = (x - 15)(x - 15)
side length =<u> (x - 15)</u>
b. add (x - 15) four times = 4(x - 15) =<u> 4x - 60</u>
It would be approximately <span>2,719,980,000 beats in their entire lifetime.</span>