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.

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

Which table represents a linear function? i'll give brainliest to first answer ^'^

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)