At the school bookstore, pencils cost $1.29 each, erasers cost $2.55 each, rulers cost $3.52 each, and a pack of twelve pens costs $7.56. Which of these
statements are TRUE? Select all that apply.
A. The total cost of four rulers, eight pencils, and an eraser is $26.95.
B. The total cost of thirty-six pens and two erasers is $20.22.
C. The cost of each pen in the 12-pack is 63 cents.
D. Seven rulers cost $3.77 more than four erasers.
E. Twelve pencils cost more than four rulers.
0

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

the first one, all those points on the line just make a strait line.

b

step-by-step explanation: