Joni usually buys 20 pounds of dog food at the pet store for $19.95. She gets a coupon in the mail for 15% off a 10 pound bag, n
ormally priced at $12.95. Which is cheaper per pound?
1 answer:
Answer:
19.95
Step-by-step explanation:
This is one of those questions that are a must do. The process is called estimation and if you follow it carefully, you learn a lot.
Round 19.95 to 20
Round 12.95 to 13 dollars. You get 15% off. which is about (1.50 + 0.75 = 2.25)
This the 10 pound bag down to 13 - 2.25 = 10.75. This is higher than 1 dollar per pound.
20 pounds for 20 dollars = 1 dollar per pound.
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Answer:
There just reflected so its the same
Step-by-step explanation:
Answer:
The correct answer is C.
Step-by-step explanation:
(a)
tanΦ=s/750
Φ=arctan(s/750)
(b)
Φ=arctan(900/750)≈50.19°
Φ=arctan(1500/750)≈63.43°