<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>
1 mile = 5280 feet
81 * 5280 = 427680 feet per hour
1 hour = 3600 seconds
427680 / 3600 = 118.8 feet per second
118.8 * 15 = 1782 feet in 15 seconds
Hey there! :D
2x+7-3
The only thing you can simplify is 7 and 3.
7-3= 4
2x+4 <=== simplified expression
I hope this helps!
~kaikers
Answer:
x=-b/2a
Step-by-step explanation:
hope that helps :)
mark as brainliest please :)
