Answer:
E
Step-by-step explanation:
is the answer
Answer:
The answer is D. ![(\frac{1}{5} )^{2}](https://tex.z-dn.net/?f=%28%5Cfrac%7B1%7D%7B5%7D%20%29%5E%7B2%7D)
Step-by-step explanation:
![5^{4} *(5^{-3} )^{2}](https://tex.z-dn.net/?f=5%5E%7B4%7D%20%2A%285%5E%7B-3%7D%20%29%5E%7B2%7D)
simplify the expression by multiplying
![5^{4} *5^{-6}](https://tex.z-dn.net/?f=5%5E%7B4%7D%20%2A5%5E%7B-6%7D)
calculate the product
![5^{-2}](https://tex.z-dn.net/?f=5%5E%7B-2%7D)
express with a positive exponent using ![a^{-n} =\frac{1}{a^{n} }](https://tex.z-dn.net/?f=a%5E%7B-n%7D%20%3D%5Cfrac%7B1%7D%7Ba%5E%7Bn%7D%20%7D)
Well, if y is the notebook cost, well x+y=6.28, x+x+0.70=6.28, 2x=5.58, x=2.79.
The pencil box costs $2.79, while the notebook costs $3.49.