9514 1404 393
Answer:
-4
Step-by-step explanation:
The average rate of change is given by ...
m = (y2 -y1)/(x2 -x1)
m = (-10 -(-2))/(3 -1) = -8/2 = -4
The average rate of change on the interval [1, 3] is -4.
The price of the pear is $0.6
Given:
The total cost of lunch is $3.50, consisting of a juice, a sandwich, and a pear.The juice cost 1.5 times as much as the pear.The sandwich costs $1.40 more than the pear.
From above statements
Juice + sandwich + pear = $3.50 -----------eq(1)
Juice = 1.5 * pear
sandwich = pear + $1.40
substitute juice and sandwich values in eq(1)
1.5 pear + pear + $1.40 + pear = $3.50
3.5 pear = $3.50 - $1.40
pear = $2.10/3.5
pear = $0.60
Hence the price of the pear is $0.6
Learn more about the price and pear here:
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Answer:
27
Step-by-step explanation:
Answer:
the original number is greater
Step-by-step explanation:
1. let 1x be your starting number
2. therefore, 0.5 * 1x = 0.5x ( amount after you decreased it by 50%)
3. then increase: 0.5x * 1.5 = 0.75x (amount after you increased it by 50%)
4. 0.75x < 1x (this means that the original number is larger than the one you decreased and then increased)
Answer:
560/800 = 0.7 pounds per dollar
