Answer:
option D
Step-by-step explanation:
x=-1 and x=-3 are the real zeros
We plug in the x values in each equation and check which equation makes y=0
A) y=x^4-4x^3-4x^2-4x-3
x=-1 , 
x=-3 , 
y is not equal to 0 so option A is not correct
B.y=-x^4-4x^3+4x^2+4x+3
x=-1 , 
x=-3 , 
y is not equal to 0 so option B is not correct
C.y=x^4+4x^3+3x^2+4x-4
x=-1 , 
x=-3 , 
y is not equal to 0 so option C is not correct
D) y=x^4+4x^3+4x^2+4x+3
x=-1 , 
x=-3 , 
y=0 so option D has two real zeros x=-1 and x=-3
Equation B.
The average of the sum of the existing 3 scores plus the score of the new test should equal 85.
To solve this, multiply both sides by 4 and subtract 256. The student needs an 84 in order to have an average of 85.
22, 5 on top, 6 on right, 6 on left, 5 on bottom.
Answer:
Town C.
Step-by-step explanation:
Average change of population with time for town A = 
Average change of population with time for town B = 
Average change of population with time for town C = 
Average change of population with time for town D = 
Town C had the greatest average change in population over time (800/yr).
Joey is asked to find the mean of this set of data: 4, 6, 7, 7, 7, 8, 12, 13, 15, 15, 17. what doe that mean
mojhsa [17]
Answer: 111 divided by 11 is your mean. your mean will be 10.09
Step-by-step explanation: add together all of the numbers to get the sum then divide the sum by the number of data entries(numbers) you have.
