Question

нужно купить карандаши по 5 р за штуку. всего имеется 50 рублей. После покупки n карандашей остается c р. Задайте формулой зависимость c от n.Сколько точек получится? Какова область пределения функций?

Answer 1

N -количество карандашей

5N = 50+ C.р.

C.р. = 5N - 50 = 5(N - 10)

 

 

 

 

 

 

 

Answer 2

Calculating the number of pencils purchased and amount remaining

Given that pencils cost 5 rubles each, and the total amount available is 50 rubles, we can calculate: * Let n = the number of pencils purchased * Each pencil costs 5 rubles * So the amount spent on pencils is n * 5 rubles * The original amount was 50 rubles * The amount spent is n * 5 rubles * So the amount remaining is 50 - n * 5 rubles

Stating the formula

Therefore, the formula for the amount remaining (c) in terms of the number of pencils purchased (n) is: c = 50 - 5n

Analyzing the function

This is a linear function with a negative slope. The domain of n is the set of all whole numbers between 0 and 10 inclusive, since we cannot purchase a negative number or fractional number of pencils. The range of c will be all real numbers between 0 and 50.

So in summary, if we purchase n pencils, the amount remaining is given by c = 50 - 5n, where 0 ≤ n ≤ 10 and 0 ≤ c ≤ 50.