PLS HELP IF U CAN where is the graph increasing? options: x<0 or x>0
1 answer:
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We want to find the product:
.
By the
, we distribute 
over each of the three terms inside the parenthesis:
.
Multiplying the coefficients, and adding the exponents we get:
.
Answer:.
By the
Multiplying the coefficients, and adding the exponents we get:
Answer:
Answer: 68
Step-by-step explanation:
As per given , we have
Population standard deviation :
Critical value for 90% confidence interval =
Margin of error : E= 0.8 milligrams
The formula to find the sample size is given by :-
i.e.
Hence, the limnologist must analyze 68 samples.