Answer:
B
Step-by-step explanation:
(w-2.5)(w+2.5)=w(w+2.5)-2.5(w+2.5)
=w²+2.5w-2.5w-2.5²
=w²-2.5²
22.2710574513
x = 2y − 2
x + y + 5 = 2x - y + 7
−x + y + 5 = −y + 7
−x + 5 = −2y +7
−x = −2y + 2
Answer: is 11 hours.
