Holaaa, Esta es mi operación: 7-7: 1 x 1 + 3)por fi necesito una ayudis en esto

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Can anyone me with 32,33,36,37,and 40.