Answer:
x= -2
Step-by-step explanation:
8-2=6
also, 8-8=0, 6-8= -2
x=-2
Hope this helps:)- please crown me brainliest!
Jake spent a total of 70 cents.
b = black-and-white = 8 cents
c = color = 15 cents
70 = 8b + 15c
he made a total of 7 copies
b + c = 7
system of equation:
70 = 8b + 15c
b + c = 7
--------------------------
b + c = 7
b + c (-c) = 7 (-c)
b = 7 - c
plug in 7 - c for b
70 = 8(7 - c) + 15c
Distribute the 8 to both 7 and - c (distributive property)
70 = 56 - 8c + 15c
Simplify like terms
70 = 56 - 8c + 15c
70 = 56 + 7c
Isolate the c, do the opposite of PEMDAS: Subtract 56 from both sides
70 (-56) = 56 (-56) + 7c
14 = 7c
divide 7 from both sides to isolate the c
14 = 7c
14/7 = 7c/7
c = 14/7
c = 2
c = 2
---------------
Now that you know what c equals (c = 2), plug in 2 for c in one of the equations.
b + c = 7
c = 2
<em>b + (2) = 7
</em><em />Find b by isolating it. subtract 2 from both sides
b + 2 = 7
b + 2 (-2) = 7 (-2)
b = 7 - 2
b = 5
Jake made 5 black-and-white copies, and 2 color copies
hope this helps
For every elapsed year (X), 5000 bachelor degrees in business will increase (Y).
<h3><u>
Linear functions</u></h3>
To determine, if the number of bachelor degrees in business continues to grow linearly, what will be the growth parameter in said linear equation, the following calculation must be performed:
- (100000 - 50000) / (2000 - 1990) = Y
- 50000 / 10 = Y
- 5000 = Y
Therefore, for every elapsed year (X), 5000 bachelor degrees in business will increase (Y).
Learn more about linear functions in brainly.com/question/17058347
134 hope I helps with ur problem
