1) (2² * 5) + 10 = (4*5) + 10 = 20 + 10 = 30
2) (0.1² * 5) + 10 = 0.05 + 10 = 10.05
3) p(x) = (x² * 5) +10 = 5x²+10
b) p(-1) = 5 * (-1)² + 10 = 15
p(3) = 5*3² + 10 = 55
p(0) = 5*0 + 10 = 10
c) 5x² + 10 = 10.2
5x² = 10.2- 10
5x² = 0.2
x² = 0.2 / 5
x² = 0.04
x =V0.04
x = 0.2