Answer:
13.5 minutes
Step-by-step explanation:
Cross multiply
3 × 576 = 128x
3 × 576 = 1,728
1,728 = 128x
1,728 ÷ 128 = x
13.5 = x
x^4-x^3-5x^2-3x
Step-by-step explanation
Use the FOIL Method or factor.