The new science and math building on campus has four elevators each designed to carry a maximum of 8 people. A building safety study has found that the combined weight of 8 people can be modeled by a normal distribution with mean of 1400 pounds and a standard deviation of 120 pounds. Using the figure of a standard normal distribution, is the following statement valid or not valid?

We would expect the total weight of 8 people to be between 1250 and 1550 pounds more than 75% of the time.

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2

parallelogram is the   answer

x=25?

i think this is the answer hope this

step-by-step explanation: