The number is -3 because -3 minus 16 equals -19.

**Answer:**

2nd option: the lowest point on the graph is (-2, -2). this is where both sides of the parabola converge. from this point, both lines go up. this means the vertex is a minimum.

**Answer:**

128

**Step-by-step explanation:**

Givens

a = 2

L = 256

d = 2

n = ?

Formula

L = a + (n - 1)*d

Solution

256 = 2 + (n - 1)*2 Subtract 2 from both sides

254 = (n - 1)*2 Divide by 2

254/2 = n-1)*2/2 Do the division

127 = n - 1 Add 1 to both sides..

128 = n

**Answer:**

**Step-by-step explanation:**

I don't know if you made a mistake when typing but I am guessing you meant x - 21 = 103

(x-21) = 103 Add 21 to each side

x - 21 + 21 = 103 + 21

x = 124