Does anybody know this one :)

Step-by-step expWe know that 1st point of 5 number summary represents lowest data point, 2nd point represents 1st or lower quartile, 3rd point represents median, 4th point represents upper quartile, and 5th point represents highest data point.

We know that lower quartile represents 25% of data. We can see that the value of lower quartile is 5.

Therefore, 25% of Carlson High School teachers have fewer than  5 years of experience.lanation:

y= (-9/2)*x-5/2  or  2y+9x+5=0

Step-by-step explanation:

given the following equation

y² = 5*x⁴ - x²

we can take the derivative with respect to x in both sides to get the slope of the tangent line , and knowing that y=f(x) we can apply the chain rule , therefore

d(y²)/dx = d(5*x⁴ - x²)/dx

2*y*dy/dx = 5*4*x³ - 2*x

dy/dx = (10*x³-x)/y

replacing values (x=-1,y=2)

m=dy/dx = (10*(-1)³-(-1))/2 = -9/2

now from the equation of the line

y= m*x+h

we know that (x=-1,y=2) belongs also to the line since it is tangent to the curve, thus

2= (-9/2)*(-1) + h

h = 2 - 9/2 = (-5/2)

thus

y= (-9/2)*x-5/2

or

2y+9x+5=0