For the first one, 2/5 is the constant rate of proportionality because you are using it in a y=kx equation.
Answer:
4^10
Step-by-step explanation:
4^2 * 4^8
We know that a^b * a^c = a^(b+c)
4^2 * 4^8 = 4^(2+8) = 4^10
I included the formula and the answer
Answer:
58%
Step-by-step explanation:
Let's say you started with 100 dollars. Then, the next year, since it decreased by 30%, you would now have 100 - 30 = 70 dollars. Then, you decrease by 40%, so now it is 70 - 28 = 42 dollars. So, the total percent decrease is 100-42 = 58 percent.
Answer:
She made $195 in extra money
Step-by-step explanation:
486+254=740
740-545=195