(a): find the coordinates of the vertex (b): find the intercept(s). for both the x- and y-intercepts, make sure to do the following: -if there is more than one, seperate them with commas. -if there are none, write "none" x-intercept(s): __ y-intercept(s): __ (c): find the equation of the axis of symmetry equation of axis of symmetry:

A. The vertex of a curve is where the curve is at its highest or lowest, depending on whether the line opens up or down. Since this is a curve that opens up, the vertex is where the curve is at its highest. In this case, the vertex is (-3,-1).

B. The x-intercepts are the points on the graph where the curve crosses the x-axis, while the y-intercepts are the points on the graph where the curve crosses the y-axis. In this case, the x-intercepts are (-4,0) and (-2,0) and the y-intercept is (0,8).

C. The axis of symmetry is the vertical line that splits the curve evenly. In this case, the axis of symmetry is x = -3

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

a

step-by-step explanation:

strong negative correlation