Question 13-18 & 22-27 will all be answered the same way, so i will walk you through question 13: (6,4) y=3x-2
(x,y)=(6,4)
now that we know the first number in the parenthesis is the x value and the second number in the parenthesis is the y value we can plug it into the equation. (x=6,y=4)
4=3x-2 (add two to each side)
4+2=3x
6=3x (divide 3 from each side)
x=2
---------------
y=3(6)-2
y=18-2
y=16
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answer: (2,16)
now apply the same principles to the other problems!!! hope this helped!!!
N=410,439
You can just type your problem into a calculator-- you're just finding out what 420,008-9,569 is. :)
Answer:
A computer costs $225 and a printer $150.
Step-by-step explanation:
Let c be the cost of a computer and p the cost of a printer, then:
3c + p = 825
4c + 2p = 1200
Multiply the first equation by -2:
-6c - 2p = -1650
Add this to the second equation:
-2c = -450
c = 225.
Now substitute c = 225 in the first equation:
3*225 + p = 825
p = 825 - 675 = 150.
19 out come
9 for the first 3 questions
10 for the last 5 questions
Hope this helps ;)
Hi there! $8 per 4 bottles means price/# of bottles will give you the average price per bottle.
8/4=$2
Therefore it is $2 for 1 bottle.
Hope this helps!
