The average price of the first four books is $40. The average price of the next six books is $80. What is the average price of all ten books

$320

Step-by-step explanation:

For every even number of books, multiply the previous # by 2.

6.)40*2=80

8.)80*2=160

10.)160*2=320

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3