I need this in 4 minutes please help

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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 !