Determine the open intervals on which the graph of f (x) = 7x^2 + x-2 is concave upward or downward

Which is the correct input-output table for the function f (x) = 7 - 4.5x?

In spherical geometry, which indicates the possible number of right angles a triangle may have? 1 2 3 All of the above

The admission price was $1.00 in 1909. How much would the Speedway have had to charge in 1999 to match the purchasing power of $1 in 1909? In other words, how much was that in 1999? (Don't use a $ sign, use 2 decimal places.)

Write a possible equation for a polynomial whose graph has the following horizonal intercepts. Show your work. A. (4,0) B. (0,0) and (4,0) C. (-2,0), (0,0), and (4,0) D. (-5,0), (1/2,0), and (3,0)

The volume of a cone is 180 in3. find a function that models the height h of the cone in terms of its radius r.

Two lines, parallel to the bases of a trapezoid divide each leg into three congruent parts and divide the trapezoid into three parts as well. Find the area of the middle part if the top and bottom parts have area S1 and S3.

Robin is making bows to sell at her mother's yard sale. She will use 3/4 foot of red ribbon and 2/3 foot of blue ribbon to make each bow. What is the ratio of the length of red ribbon to blue ribbon?

Explain why the polynomial 144x2 - 200x + 81 is not a perfect square. A. 81x ≠ 2 (20x ∙ 9) B. 144x ≠ 2 (20x ∙ 12) C. 200x ≠ 2 (9x ∙ 12) D200x ≠ 2 (12x ∙ 9)

Two factors of - 48 have a difference of 19. The factor with a greater absolute value is positive. What is the sum of the factors? a. - 19 b. - 13 c. 13 d. 16

1.) A population of 4,250 blue whale. A random sample of 10 whales shows that 5 of them are infected. How many whales are likely to be infected?