Answer:
The cost of hardbook is $9 and cost of paperback is $5.
Step-by-step explanation:
Let x be the price for hardback book and y be the price for paperback book.
Mr. Yamamoto purchased 42 new hardcover books and 64 new paperback books, which cost a total of $698.
We can write the equation as:

He also purchased 42 new hardcover books and 58 new paperback books, which cost a total of $668.
We can write the equation as:

We have to use the elimination method to solve the two equations.
We eliminate x by subtracting the two equations.

Thus, the cost of hardbook is $9 and cost of paperback is $5.
Answer:
t = 610
Step-by-step explanation:
668 - 58 = 610
610 + 58 = 668
Answer:
B
Step-by-step explanation:
6x5=30
30x2/3=20
4m - 4 = 4m
This equation does not work i'm pretty sure, are you sure you typed it up correctly??
Answer:
0.06 and 0.43
Step-by-step explanation:
You move the decimal to the left twice which gives you your answers.