I couldn't format this properly from my phone, so I used a solver, sorry :( hope this helps tho...
<span>cost of producing x radios is c(x) = 400 + 20x - 0.2x
where:
x=number of units
thus the cost required to produce 30 units will be given by
c(30)=400+20(30)-0.2(30)
c(30)=400+600-6
c(30)=994
Answer: Marginal cost will be $994</span>
Answer:
t = 21
Step-by-step explanation:
The ball strikes the groujd when h = 0.

Since time must be positive, t = 21.
Answer:
Integers; -10
Step-by-step explanation:
Numbers that include zero, counting numbers and negative counting numbers are integers.
Whenever someone owes money to another, this is represented by adding a negative sign.