Mr. Parker bought a coat when it was on sale. He paid 70% of the original price. He paid $42 for the coat. What was the original
2 answers:
You might be interested in
Keep in mind that you can gather only like terms. Two terms can be summed/subtracted if they involve the same powers of the same variables.
So, going point by point:
- We can subtract the terms, because they both involve the variable
, and we have
- We can sum the terms, because they all involve the variable
, and we have
- We can't sum this terms: 3 is a pure number, while 3r involves the variable r.
- We can only sum the two terms: we have
- We can't sum this terms: -20 is a pure number, while -15p involves the variable p.
- We can sum the terms, because they all involve the variable
, and we have
The Tampa Tribune expecting to add 700 new pictures per year to their database in 2041
<h3>The linear equation of the graph</h3>The equation of the line of best fit is given as:
When the number of pictures added is 700, we have:
y = 700
Substitute 700 for y in
Subtract 367 from both sides of the equation
Rewrite the above equation as:
Divide both sides by 8
Remove decimal (do not approximate)
This means that:
Hence, the Tampa Tribune expecting to add 700 new pictures per year to their database in 2041
Read more about linear regression at: