The answer
y=−x^2−2x-24 is like the form of y=ax² +bx +c, to find the vertex we use the formula:
the x intercept according to the vertex is x=-b/2a, and the vertex V is a point such that V [-b/2a, f(-b/2a)]
the x intercept is x= -(-2) / 2(-1) =-1, and f(-1)= -1 +2 -24= -23
the vertex is V(-1, -23)
A centimetre is the most appropriate unit
Answer:

Step-by-step explanation:
<h3>Equation of the blue line:</h3>
since the line is horizontal and passes <u>-</u><u>2</u> the equation of the blue line should be

<h3>Equation of the red line:</h3>
remember The form of equation of a line

where m is slope of the line and b is the y-intercept we can clearly see that the red line crosses y-axis at (0,-3) therefore b=-3
to figure out m we can consider the following formula:

from the graph we acquire ∆y=1 and ∆x=2
thus substitute:

so we have figured out m and b
therefore our equation of blue line is

our given options are in standard form so
move -3 to left hand side and change its sign:

cross multiplication:

move 6 to right hand side and x to left hand side and change its sign

multiply both sides by -1:

hence, our system of linear equation is

Answer:
59
Step-by-step explanation:
F = 1.8c + 32
F = 1.8(15) + 32
F = 27+32
F = 59
Answer:
225 sq inches.
Step-by-step explanation:
If two more layers are added on it would be 225 because 5*7*7=225