MEDAL AND FAN!!
Where an item is the price p determined by, p=80x+1600,
where x is the quantity of product in kg.
When the goods to be insured during transport depends premium (cost of insurance) of Prosen.
There are, y=0.05p+50,
where y indicates the premium, and p is the price of the item.
a)How much does it cost to insure a supply of 800 kg?
b) Determine an equation for the premium as a function of the delivered quantity

Question

MEDAL AND FAN!! 
Where an item is the price p determined by, p=80x+1600,
where x is the quantity of product in kg. 
When the goods to be insured during transport depends premium (cost of insurance) of Prosen. 
There are, y=0.05p+50,
where y indicates the premium, and p is the price of the item. 
a)How much does it cost to insure a supply of 800 kg? 
b) Determine an equation for the premium as a function of the delivered quantity

anonymous · Answer

.05(80x+1600)+50
(4x+80)+50
4x+130

a) plug in 800kg for x
4(800)+130 = $3,330

I don't understand what they are asking for on part b

anonymous · Answer

@EducateMe hey, it's because i translated it into english. 
It says Determine an equation for the premium as a function of the delivered quantity

whpalmer4 · Answer

So the insurance costs 50 + 5% of the price of the item?  Am I understanding correctly?

anonymous · Answer

@whpalmer4 yes, that's what i understood

whpalmer4 · Answer

And you are to provide a function which takes x = the quantity purchased (in kg) as the argument, and returns the premium for the insurance?

anonymous · Answer

@whpalmer4 yup!

whpalmer4 · Answer

I think that's what @EducateMe gave you

$$P(x) = 0.05(80x+1600)+50$$

whpalmer4 · Answer

where P(x) is the premium for the insurance on x kg

anonymous · Answer

@whpalmer4 that might be it, I don't know. But i'll try it. Thanks anyways! :-)