Can anyone please help with this
2 answers:
Let us say hmm
p = months in Portugal
b = months in Brazil
Wolfrich learned 130 words in portugal, every month, so if he lived there 1 month, he got 130*p or 130*1 or 130 words only
two months, 130*2 or 260 words
three months 130*3 or 390 words and so on
so... if he lived only "p" months, he learned then, 130 * p, or 130p
in Brazil, he learned 150 monthly, same as before, if he lived "b" months, then he learned 150 * b, or 150b
he spent a total of 14 months on both places
so.. .whatever "b" is, and whatever "p" is, we know that
b + p = 14
and he learned a total of 1920 words
so... whatever 150b is, and whatever 130p is, we know that
150b + 130p = 1920
thus
solve for "b", to see how long he spent in Brazil
what about in Portugal? well, p = 14 - b
p = months in Portugal
b = months in Brazil
Wolfrich learned 130 words in portugal, every month, so if he lived there 1 month, he got 130*p or 130*1 or 130 words only
two months, 130*2 or 260 words
three months 130*3 or 390 words and so on
so... if he lived only "p" months, he learned then, 130 * p, or 130p
in Brazil, he learned 150 monthly, same as before, if he lived "b" months, then he learned 150 * b, or 150b
he spent a total of 14 months on both places
so.. .whatever "b" is, and whatever "p" is, we know that
b + p = 14
and he learned a total of 1920 words
so... whatever 150b is, and whatever 130p is, we know that
150b + 130p = 1920
thus
solve for "b", to see how long he spent in Brazil
what about in Portugal? well, p = 14 - b
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[ Answer ]
[ Explanation ]
Y = X + 2 is saying that Y, is the X dot + 2.
When the X dot is on 0, we have to add 2 to get to where the Y dot is. X (0) + 2 = 2. That is where the Y dot is.
X (2) + 2 = 4. 4 is where the Y dot is,
Once you keep adding the X dots to 2, you will get the Y dots. That is why the equation is Y = X + 2. In order to get to Y, you need to add 2 to the X dot.