Answer:
Louis needs to save 15+39 = $ 54 dollars
Step-by-step explanation:
\begin{aligned} 15 + 39 &=& \\ 10 + 5 + 30 + 9 &=&\\ 10 + 30 + 5 + 9 &=&\\ 40 + 10 + 4 &=&\\ 54. \end{aligned}
So Louis needs to save \$54.
Answer:
C. 25
Step-by-step explanation:
When the numbers with same base are multiplied, their powers add up
5^-5/2 * 5^9/2
5^(-5/2 + 9/2)
5^(4/2)
5^2
25
3rd option.
at least shows that the number can be equal to 2, and also that 2 should be the smallest possible value of the number.
