What is it’s measure and what kind of angle is formed here? Basically what the question asks dhdjdkdk

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

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