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Answer:
1. The greatest overall benefits appear in people who drink (2-3 )cups of coffee per day.
2. Why is it difficult to say for sure whether coffee has a good enect on the body ( lifestyle choices associated with coffee consumption also impact health).
3. Which of these is not a benefit associated with contee consumption ( lower chance of migraines.
Step-by-step explanation:
Given:
The equation is
The incorrect solution steps are given.
To find:
The first error.
Solution:
We have,
Using distributive property, we get
The given step 1 is 
, which is not correct.
Therefore, there is first error in step 1 because the distribution property is not used properly.
Hence, the correct option is D.
Step-by-step explanation:
cost of 1 kg of jam = x
cost of 1 kg of butter = y
3x + 2y = 29 .....1
6x + 3y = 54 .....2
.....1 × 2 both sides of equation
6x + 4y = 58 .....3
.....3 - ......2
y = 4
replace y = 4 in 1......
3x + 8 = 29
x = 7
