Hopefully this photo helps
Answer:
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Step-by-step explanation:
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Answer:
2.30*3=6.90
6.90+2.30=9.20
Step-by-step explanation:
The total square footage is 18*12+24*16=600. Buying four tiles at $17 for 4 square feet is the cheapest. The minimum cost is therefore 600/4*$17=$2550.
Answer:
20 days
Step-by-step explanation:
Number of books sold each day for 40 days :
The first quartile (Q1) = 2
For the 25% of the days = 2 books were sold
Hence 0.25 * 40 = 10 days, 2 books or less were sold
The upper quartile (Q3) = 12 books
For up to 75% of the days = 0.75 * 40 = 30 days ; 12 books or less were sold
To obtain the number of books sold between 2 and 12 ; we subtract :
(30 days - 10 days) = 20 days