Answer:
Step-by-step explanation:
f(x)=(x+2)(x-7)=x²-5x-14
Answer:
Step-by-step explanation:
49b² - 81 = (7b)² - 9 ²
by identity : 49b² - 81 = (7b - 9)( 7b + 9)
10% of 80 = 8
80 - 8 = 72
if they are 10% off, the contact lenses will cost $72
Answer:
0.6 is the diference
Step-by-step explanation: