David is twice as old as sara, and jessica is three times as old as sara. if their ages add up to 30, how old is david? x = sara's age 2x = david's age 3x = jessica's age

According to the diagram, an 8-foot-tall statue cast a shadow on the ground that is 15 feet in length. based on the information, which trigonometric ratio has the value 8/15

What is the product of (4x + - 5)? a) -8x^2 - 26x - 15 b) -8x^2 + 26x - 15 c) -8x^2 - 26x + 15

Arecipe calls for 1/2 cup of sugar and 3/4 cup of flour. if you have 3 cups of flour and you want to adjust the recipe so you use it all how much sugar do you need?