Answer:
90 hardcover books
Step-by-step explanation:
We can solve this by setting up a couple of equations.
Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.
Using the information in the question, we can write the equations:
1)x = 4y-3
2) x+y=447
Let's rearrange equation 1 so that it is in standard form:
x-4y=-3
And then let's multiply equation 2 by 4 so that we can cancel out y when we solve the system of equations:
4(x+y=447)
4x+4y=1,788
Then we can add the two equations and solve for x:
1) x-4y=-3
+ 2)4x+4y=1,788
------------------------------------
5x=1,785
x=357
So now we now the number of paperback books Tim has is 357. Let's plug this into one of the original equations to solve for the number of hardcover books (y):
357+y=447
y=90
And now we know that Tim owns 90 hardcover books.
Answer:
D. f(x) = 1.06x; $169.60
Step-by-step explanation:
x(1.06) = total after tax
160(1.06)= 169.6
Answer:
7
Step-by-step explanation:
We are given that a function
Domain=W(whole numbers set)
Range=W(Whole number set)
Assign each whole number to its largest place value digit.
We have to find the value of f(257).
For example
f(4)=4
f(14)=4
f(194)=9
Therefore, f(257)=7 because largest place value digit is 7 in 257.
The appropriate choice is ...
... the desire and the ability to pay for the item.
