Answer:
Part A) see the explanation
Part B) 
Step-by-step explanation:
Part A)
we know that
A relationship between two variables, x, and C, represent a proportional variation if it can be expressed in the form 
or 
Let
C ---> is the total cost (represent the output or dependent variable)
x ----> is the number of books (represent the input or independent variable)
In this problem
we have a proportional relationship between the variables x and C
Part B) we know that
The linear equation is given by
The constant of proportionality k is the same that the slope or unit rate of the linear equation
In this problem the constant k is given
so
For x=12 books
substitute in the equation and solve for C
In function notation
Answer:
Step-by-step explanation:
The total number of magnets that Lisa and Bill made for the craft fair is 60.
They sold about 55% of the magnets. The number of magnets that they sold would be about
55/100 × 60 = 0.55 × 60 = 33
If Lisa says that they sold about 30 magnets, she is correct because if we round off 33 to the nearest ten, it would be 30 magnets.
If Bill says that they sold about 36 magnets, he is wrong because if we round off 36 to the nearest ten, it would be 40 magnets.
3) 21,070
5) 600
6) 265
I couldn't see #4
Hoped this helped!
Answer:
Step-by-step explanation:
3/8+ 1/8 = 4/8
Answer: C) $480
Step-by-step explanation:
Given: Jose invested $5000 into a fund with an interest rate of 4.8%.
Therefore, Principal amount (P)$5000
Rate of interest = 4.8%
In decimal rate of interest(r)=0.048
Time (t)= 2 years
We know that the simple interest is given by
Hence, the interest after 2 years = $480
