Answer:
13. 13 or 17 (not sure about this, sorry)
14. 28
Step-by-step explanation:
13.

if counting the sequence from
then
is 17, but if

counting from
, then
is 13.
14.

Answer:
She started with 200 stamps
Step-by-step explanation:
Answer:
x=-1
Step-by-step explanation:
The axis of symmetry is along the vertex
The vertex is at (-1,-2)
The x coordinate is -1
x=-1
Answer: y=-3x+5
Step-by-step explanation:
Slope-intercept form is y=mx+b. So to make your equation into slope-intercept form, simply subtract 3x from both sides, which results in y=-3x+5