Rewrite the function in "vertex from (by completing the square)

1) f (x) = - x^2 + 8x+3

How much water do 4 ice cubes have?

You do a study of hypnotherapy to determine how effective it is in increasing the number of hours of sleep subjects get each night. You measure hours of sleep for 12 subjects with the following results.

A closed box with a square base is to have a volume of 85. 75 cm^3. the material for the top and bottom of the box costs $3.00 per square centimeter, while the material for the sides costs $1.50 per square centimeter.

An oak tree that is 220 years old produced acorns at two different rates. Until it reached maturity, it produced an average of 900 acorns a year. However, once the tree reached maturity, it produced an average of 2200 acorns a year.

A vet borrows $12000 for 4 years. the total interest paid was $875. what was tge interest rate on the loan?

On a trip from virginia to florida the sampson family wants to travel at least 420 miles in 8 hours of driving what must be their average rate of speed

Rapunzel cut 2/3 of of her hair. She donated 7/8 of what she cut off to a wig shop. What fraction of her hair did Rapunzel donate?

What is 6.4 divided into 52.032

Order these numbers from least to greatest. - 270, 16310, - 503, - 16.5

3. Consider the functions f (x) = x2 + 10x - 5, g (x) = 8x + 1, and h (x) = 3x - 4. List the functions from least to greatest value when x = 3 and when x = 6.