Determine if the graph of the function is concave up or concave down.

1. f (x) = - 4x^2 - 2x - 8

2. y = 2 (x+5) ^2 + 5

3. y = - 1/5 (x+1) ^2 - 1

What is 100*100-50+100

What does 27-5x=83 answer

Factor completely. x²-3x-28 A. (x - 7) (x+4) B. (x + 7) (x-4) C. (x + 14) (x-2) D. (x + 14) (x + 2)

Determine the absolute value of - 11.

Suppose that a rectangle has a perimeter of 17 meters. Express the area A (x) of the rectangle in terms of the length x of one of its sides. I did what I know and got 8.5x+x^2 and it was wrong

Deluxe coffee is to be mixed with regular coffee to make at least 46 pounds of a blended coffee. The mixture must contain at least 11 pounds of deluxe coffee. Deluxe coffee costs $7 per pound and regular coffee $5 per pound.

Angie takes a loan of $1000 that has a simple interest rate of 3% annually. What is the amount of interest accrued after 2 years?

How many grams in 2/3 of a pound

Larry was able to walk 4 more than twice as many dogs as his friend kyle. write an algebraic expression to represent the number of dogs larry walked compared with kyle

What is the constant of variation, k, of the direct variation, y=kx, through (-3,2)