The table below models the cost, y, of using a high- efficiency washing machine and a standard washing
machine over x number of years,
Which equation represents the cost of the high-
efficiency washing machine over a given number of
years?
Which equation represents the cost of the standard
washing machine over a given number of years?
Number of
Years
High-
Efficiency
Cost ($)
Standard
Cost ($)
After how many years of use would the washing
machines cost the same amount?
Which washing machine would be the more practical
purchase if kept for 9 years?
1
525
430
2
550
460
3
575
490
) Intro
Done
10

im alright what do you need

step-by-step explanation:

idk what the heck he answer is, i’m just putting this here so i finish my account

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?