kaylaa154
27.08.2019 •
Mathematics
Bananas are on sale for $0.40 a pound, and you have a coupon for $0.25 off your total purchase. write a function rule for the cost of n pounds. how much would 30 pounds of bananas cost?
a) c(n)= 0.25n-0.40; $7.10 b) c(n)= 0.4n-0.40; $11.60 c) c(n)= 0.4n-0.25; $11.75 d) c(n)= 0.4n; $12.00
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Ответ:
Answer
Write a function rule for the cost of n pounds and Find how much would 30 pounds of bananas cost .
To prove
First Case
First find the function rule for the cost of n pounds.
As given
Bananas are on sale for $0.40 a pound, and you have a coupon for $0.25 off your total purchase.
Here number of bananas = n pounds
Than the function becomes
C(n) = 0.4n - 0.25
Where C(n) is represented the total cost of the n pounds bananas.
Second Case
Find the cost for the 30 bananas .
Put n = 30 in the above equation.
C(30) = 0.4 × 30 - 0.25
= $11.75
Therefore the option (C) is correct.
Ответ:
The number of loaves of banana bread can Javier make with 4 teaspoons of nutmeg is 32.
Step-by-step explanation: Given that Javier uses teaspoons of nutmeg for each loaf of banana bread he makes.
We are to find the number of loaves of banana bread can Javier make with 4 teaspoons of nutmeg.
We will be using the UNITARY method to solve the given problem.
We have
Number of loaves of bread made by teaspoons of nutmeg = 1.
So, number of loaves of bread made by 1 teaspoon of nutmeg will be
Therefore, the number of loaves of bread made by 4 teaspoon of nutmeg is given by
Thus, the number of loaves of banana bread can Javier make with 4 teaspoons of nutmeg is 32.