Answer:
Step-by-step explanation:
Let 
be the temperature on the first day
Second day temperature
Third day temperature
Fourth day temperature was 
On the first day the temperature was
Pick any two pairs of equations<span> from the system. Eliminate the same </span>variable<span> from each pair using the Addition/Subtraction method. Solve the system of the two new </span>equations<span> using the Addition/Subtraction method.</span>
Answer:
(C) 10.4 lb
Step-by-step explanation:
If Paul added each weight before adding, as you state, he got:
Apples 3.78 ⟶ 3.8
Peaches 2.12 ⟶ 2.1
Oranges 4.45 ⟶ <u> 4.4
</u>
Total 10.3 lb
If he did it this way, he did it <em>incorrectly</em>, and his answer isn't in the list of options, anyway. That's because his method introduces round-off errors.
The correct way is to add the numbers as given, and then round off <em>at the end</em>.
Apples 3.78
Peaches 2.12
Oranges <u> 4.45</u>
Total 10.35 ⟶ 10.4 lb
Note: When you drop a 5 f<em>ollowed by nothing</em>, you round off to the <em>nearest even number</em>.
<h2>the answer is <u>$698 hope you get the answer right </u></h2>
80 * 2^0 = 80*1 = 80g (amount initially)
<span>80 * 1/2 = 40 g (amount remaining after one half life) </span>
<span>80* (1/2)^2 = 80* 1/4 = 20 g (amount remaining after 2 half lives).</span>
