If you pay $7 for a night light that costs $0.50 per year in electricity to operate, then how much will
you have spent on the night light if you operate it
continuously for Y years? Write an expression in
terms of Y. Evaluate your expression for the cost
of the night light when Y = 4 and when Y = 55.
Explain your work.

c

step-by-step explanation:

i think because what else can be a sample of every member

25% is the answer

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870