Pleas explain how you solved for x cause i don't have a clue of what to do!

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

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 !

5x−4≥12 or 12x+5≤−4 can you with this problem