Can sombody write me some notes on Angles Relationship???

Thats all I ask for math.

7x+8y=-18, 4x-9y=-3 solve the system of equations

Write the pair of fractions as a pair of fractions with a common denominator

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. after tax the total is 45.99. what percentage of the subtotal is the total?