Find the cost of 3 items if the cost function is C(x) = 12x + 3.
45
15
39
30
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OpenStudy (anonymous):
@J-bird
OpenStudy (anonymous):
@J-bird
OpenStudy (anonymous):
im here
OpenStudy (anonymous):
k, I have 4 more Q's after u answer the first one
OpenStudy (anonymous):
this one is easy, its 39
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OpenStudy (anonymous):
Find the revenue from selling 10 items if the revenue function is R(x) = 175 − 12x.
163
55
150
45
OpenStudy (anonymous):
whats 10 x 12?
OpenStudy (anonymous):
120
OpenStudy (anonymous):
good now whats 175 - 120??
OpenStudy (anonymous):
50
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OpenStudy (anonymous):
good, see i told you it was easy :D
OpenStudy (anonymous):
next question??
OpenStudy (anonymous):
50 isn't in the answers
OpenStudy (anonymous):
hmm
OpenStudy (anonymous):
poh wait you did your math wrong :P
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OpenStudy (anonymous):
you took off an extra 5, its 175 - 120 not 125
OpenStudy (anonymous):
so just add 5 to your answer
OpenStudy (anonymous):
Find the revenue from selling 22 items if the revenue function is R(x) = 250 − 7x.
102
211
96
243
OpenStudy (anonymous):
hey j-bird how are you a human calculator
OpenStudy (anonymous):
if you get 50 medals in mathematics you can unlock title
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OpenStudy (anonymous):
ok whats 7 x 22?? @DUDE..LOOK..ITS..SGTC
OpenStudy (anonymous):
easy 154
OpenStudy (anonymous):
im trying to help this huy with his math, he needs to answer
OpenStudy (anonymous):
guy*
OpenStudy (anonymous):
150
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OpenStudy (anonymous):
nope
OpenStudy (anonymous):
oh
OpenStudy (anonymous):
154
OpenStudy (anonymous):
its ok to use a calculator
OpenStudy (anonymous):
there you go
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OpenStudy (mandre):
Just substitute x with the number of items then you have simple math which will solve all problems of the same type.
It's the same as saying "If x = 10, what is 175-12x?"
OpenStudy (anonymous):
now 250 - 154
OpenStudy (anonymous):
i need help with a problem
OpenStudy (anonymous):
hang on a sec @calebisawesome
OpenStudy (anonymous):
96
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OpenStudy (anonymous):
k i already asked the question it is hard for me
OpenStudy (anonymous):
ok next question
OpenStudy (anonymous):
The revenue function for making waterslides is given by R(x) = 10x − 115. How much revenue is generated from the selling of cost 323 waterslides?
$3,225
$3,115
$3,455
$3,875
OpenStudy (anonymous):
10 x 323
OpenStudy (anonymous):
3230
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OpenStudy (anonymous):
good, now subtract 115
OpenStudy (anonymous):
3115
OpenStudy (anonymous):
there you go, do you have any more??
OpenStudy (anonymous):
last one
The cost function for making jeans is given by C(x) = 0.5x + 15. The revenue function for making jeans is given by R(x) = 1.4x + 10. What is the break-even point for manufacturing jeans (rounded to the nearest jean)?
4 pairs of jeans
5 pairs of jeans
6 pairs of jeans
7 pairs of jeans
OpenStudy (anonymous):
brb, garbage need out
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OpenStudy (anonymous):
K
OpenStudy (anonymous):
ok im back
OpenStudy (anonymous):
k
OpenStudy (anonymous):
the Q is up
OpenStudy (anonymous):
you can do this one by substitution. with each of the answers, substitute them as x in both equations and see if they are equal
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