21-23 plz:))

21. In terms of a , what is the area of the triangle on the right? (37) 12 A. 72sin a B. - tan a y 2 C. 12 sin a cosa D. 72 sin a cos a E. 144 sin a cosa X 22. If 2Vx - 1= V3x+1, then what is the value of x? (31) 23. A line has parametric equations x = -2 + 2, and y = 41 +6. What is the slope of the line representing y as a (62) function of x? Solve the word problem below. 24. The Smith family took a scenic route during a road trip to enjoy the view on the way to their destination. (60) They drove 25 miles at a direction 60 north of west and then turned to drive 100 miles straight west to VDre reach their destination. How many miles and in what direction would they need to drive if they wanted to drive straight home without taking the scenic route? (Assume there's a road that goes that direction.) Round any irrational answers to one decimal place