1a) What is the slope of the following two graphs? Show work! YA
8
y-axis
7-
21
6
51
1
4
5
-3
-2
-1
0
4
3
3
X-axis
-11
N
-21
1
-31
0 1 2 3
4
5
6 7 8 x
1b) Write an equation for both graphs. No work necessary here.
1c) Write an exponential function that has a starting value of 0.00001 and a growth rate of 1%.
1d) Write an exponential function that has a starting value of 0.1 and a decay rate of 0.1%.

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10