Math- finding the volume of the triangle. show work, i am very confused

With: label the vertices and all the elements needed. find x

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !