The answer is Letter B - $2,850.
Multiply the number of shares to their respective costs per share. Add the results. Get the total number of shares then divide it by 10 before multiplying the result to 4.25. Add the product to the previous total.
Hyren Airlines: 92 shares x 13.70 = 1260.4
Giaco Household Goods: 130 x 3.28 = 426.40
Iwad Records: 126 x 8.06 = 1015.56
Total: 2,702.36
Commission: (92 + 130 + 126) 348 shares / 10 shares = 34.8 x 4.25 = 147.90
Total: 2702.36 + 147.90 = 2,850.26 or 2,850
The answer is 4/20 are purple out of 20 trays reduced to 1/5
The area is 64. Area, as you probably know, is the length times the width of the figure. The length from A to C is approximately radical 128, and the length from C to D is approximately radical 32 (btw, the radical is the check mark with line that goes above and next to the radicand (the number on the inside of the radical)). Multiply these two to get the area, and you should end up with 64.
Y=x2 the extreme would be x=0