The correct answer because 150 divided by 20 is 7.5 and you can't buy a half of a pack so therefore you would have to buy 8 packs
Answer:
This tells us that the vertex is at (−2, 9) and the equation of the axis of symmetry is x = −2. To find the x-intercepts, we put y = 0 to obtain
(x + 2)2 − 9 = 0
(x + 2)2 = 9
x + 2 = 3 or x + 2 = −3
x = 1 or x = −5.
Step-by-step explanation:
Image result for Which quadratic function has a y-intercept of 4? y=x2−2x+4 y=x2+2x+9 y=−x2+3x y=x2+13x+12
The standard form of a quadratic equation is written as y=ax2+bx+c, where x and y are variables and a, b, and c are known constants. To find the y-intercept from a quadratic equation, substitute 0 as the value for x and solve. The y-intercept is always equal to the value of c in the equation.
Answer: 24 inches
Step-by-step explanation:
First, remember that 1 ft is equal to 12 in
Then, if 1 ft = 12 in
1 = 12in/1ft
this means that we can write a constant:
C = 12in/1 in
and C = 1, then we can write the width 2ft as:
2ft = 2ft*C = 2ft*12in/1ft = 24in
