Answer:

Step-by-step explanation:
Remember that

Let
x ----> the total cost of the books
we know that
The total cost of the book multiplied by 0.65 must be equal to $438.75
so
The linear equation that represent this situation is

solve for x

You write 34 billion and 219 thousand as 34 000 219 000.
Answer:
672
Step-by-step explanation:
V=LWH
V=12*7*8
V=672
What’s your question about you doing ok with
So you cannot really get the exact measure because they didn't give you any measures, but we can infer that if c>b and a then
maybe SX (d) is more than b and a so
a<b<c or d not sure which
sorry if I didn't help