Answer:
y = 4 (-3) - 2
y = -12 - 2
y = -14
Step-by-step explanation:
Answer
The median is 83
You must put the scores in order to find median.
48, 58, 65, 71, 77, 80, 83, 88, 92, 92, 93, 96, 97
Then you find the number that is in the exact middle of the list.
In this case the median (middle number) is 83
see explanation
Use the points to find a and b, that is
(2, 18)
18 = a → (1)
(4, 162)
162 = a → (2)
divide (2) by (1)
= = 9
b² = 9 ⇒ b = 3
substitute b = 3 into (1)
18 = 9a ⇒ a = 2
y = 2 ← exponential equation
x = -7/5 y = -6/5
System:
y = -2x-4
AND
y= 3x+3
therefore -2x-4 = 3x+3
-2x-3x = 3 + 4
-5x = 7
x = -7/5
y = 3(-7/5) + 3 = -21/5 + 3 = -6/5