F (x) = x2 - 8x - 9 what is the vertex

Sally has 10 apples. Her sister gave her 2 more apples. How many apples does Sally have now?

Find the value of y that makes y + 4,6, y, ... an arithmetic sequence.

Gershume's dad makes a deal with him that he needs to pay for 15% of his new puppy. If the new puppy costs $125, how much will Gershume pay?

Mr. Moore needs to share 4 ounces of red among 5 art student's. How much red paint will each student receive?

B. Factor 48j + 60k + 24 by finding the greatest common factor of the terms.

Let f (x) = 9x - 2 and g (x) = - x + 3. Find f (g (x)).

3x+2y+2x when x = 20 and y=-3

A 4-pound bag of sugar contains 454 one-teaspoon servings and costs $3.49. A batch of muffins uses 1/4 cup of sugar. How many batches can you make if you use all the sugar? What is the cost of sugar for each batch? (1 cup = 48 teaspoons)

Tom had $84.50 and then spent $12.25 for a music CD, $17.85 for a gift, and CV$15.45 for gasoline. How much did he have left?

Answer quickly for 5 star and brainliest! A hot air balloon is 10 meters above the ground and rising at a rate of 15 meters per minute. Another balloon is 150 meters above the ground and descending at a rate of 20 meters per minute.