Thee differents between the highest and the lowest observation is called

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

Which of the following are parts of a sphere

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100