Answer:
no
Step-by-step explanation:
She will pay $1.50 for the hairbrush and her mum paid $1.50 as well
Given :
p = 0.68
margin of error, E = 0.1
99% confident interval
alpha, α = 1 - 0.99
= 0.01

∴
(z-critical value)
Sample size = 


= 144.37
= 145 (rounded off)
Therefore, there are 145 businesses does she need to sample to meet this criteria.
Answer:
Randy is 48 years old
Sandy is 12 years old
Todd is 27 years old
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Step-by-step explanation:
Given
Represent their ages with the first letters of their names:



Required
Determine their individual ages
We'll solve the above equations using substitution method of simultaneous equations
Substitute 15 + S for T and 4 * S for R in 
This gives:


Collect Like Terms


Divide through by 6


<em>This implies that Sandy is 12 years old</em>
Substitute 12 for S in
and 




<em>This implies that Randy is 48 years old and Todd is 27</em>
Answer:
f(x)=3-4 In (x-2)=graph 3
f(x)=3-In x=graph 1
f(x)=In (x+1)=graph 4
f(x)= 2In (x+3)= graph 2
Step-by-step explanation:
Use a graph tool to visualize the functions.Attached are the graphed functions respectively.