Answer:
There are two correct answers for this question depending on how you think of it.
3x or -3
Step-by-step explanation:
3x could be right because the rest of them are negative. But also on the other case -3 because the rest have x's and this one doesn't
Hope this helps :)
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z=-3
Step-by-step explanation:
Answer:
19 for each one
Step-by-step explanation:
Divide 57 by 3
Answer:
x = - 10
Step-by-step explanation:
Average is calculated as
average = 
, thus
= 3
Multiply both sides by 3 to clear the fraction
19 + x = 9 ( subtract 19 from both sides )
x = - 10
Based on the given situation above and given that the Cost is C and x is for the credit hours taken, and that per hour is $160 with an additional $50 to it, the equation would be like this: C(x) = 160x + 50. So the correct answer would be option C.
