What expression in terms of x can be used to represent the area of parallelogram PQRS?

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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)] =?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)