Answer:
y = -7
Step-by-step explanation:
This line is a horizontal line [HOY] - horizontal, 0 slope, and the equation starts with y = ___ , since it crosses at -7, then the line is y = -7
Answer:
- The system of equations is x + y = 85 and 7/20x+2/5y=31
- To eliminate the x-variable from the equations, you can multiply the equation with the fractions by 20 and multiply the other equation by -7.
- B-She used 60 minutes for calling and 25 minutes for data.
Step-by-step explanation:
It is always a good idea to start by defining variables in such a problem. Here, we can let x represent the number of calling minutes, and y represent the number of data minutes. The the total number of minutes used is ...
x + y = 85
The total of charges is the sum of the products of charge per minute and minutes used:
7/20x + 2/5y = 31.00
We can eliminate the x-variable in these equations by multiplying the first by -7 and the second by 20, then adding the result.
-7(x +y) +20(7/20x +2/5y) = -7(85) +20(31)
-7x -7y +7x +8y = -595 +620 . . . . eliminate parentheses
y = 25 . . . . . . . . simplify
Then the value of x is
x = 85 -y = 85 -25
x = 60
Im not sure what the 5 step plan is but 98 people/7 groups is 14 people per group
Total = Principal * ((1 + rate/n)^(n*years)
Total = 3,000 * (1.04)^20
Total =
3,000 *<span>
<span>
<span>
2.191123143
</span>
= </span></span>
<span>
<span>
<span>
6,573.37</span></span></span>
So, he will have to add (7,000 - <span>6,573.37) =
$ 426.63
answer is b
Here's a calculator to check your work http://www.1728.org/compint.htm
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