Answer:
P(-1) = -18
Step-by-step explanation:
P(x) = x^4 +5x^3 -4x-18
p(-1) = (-1)^4 + 5(-1) -4(-1) -18
P(-1) = 1 -5 +4 -18
= -4+4-18
= -18
1. <7 = 65°
2. <4 = 115°
3. <6 = 115°
4. <1 = 65°
5. <16 = 60°
6. <18 = 60°
7. <21 = 120°
8. <10 = 55°
9. <11 = 125°
10. <12 = 55°
8,11,14,17,20,23 pennies
Hope this helps