Answer:
the answer would be 8x-10
Answer:
I think grater then?
Step-by-step explanation:
C(x) = 400 + 20x - 0.2x²
c(30) = 400 + 20(30) - 0.2(30)²
= 400 + 600 - 0.2(900)
= 1000 - 180
= 820
It costs $820 when 30 radios are produced.
Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two.
c(31) = 400 + 20(31) - 0.2(31)²
= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.
Now we find the difference which means we subtract the two.
828 - 820 = 8.
Your marginal cost is $8.
To compare we can also do 29 radios.
c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812
820 - 812 = 8.
Answer:
Surface Area = 282.6 cm²
Step-by-step explanation:
Formula: SA = 2
rh + 2r²
SA = 2rh + 2r²
SA = 2(3.14)(5)(4) + 2(3.14)(5)
SA = 2(3.14)(5)(4) + 2(3.14)(25)
SA = 125.6 + 157
SA = 282.6 cm²
