(10 points and brainliest for best)
write a fact family for

2,−5,and−10
(im gonna be honest i dont rember anything about fact family's ; - ; )

you can answe this by using a fimly tree for the numbers!

Step-by-step explanation:

Here is the work for this:

2,-5,-10

we start with 2,nothing can go into this number so we would have to put it as a whole, 2=1whole

next is -5,we need to make it a positive! after making it into a positive you must think,"How can I get 5,what two numbers make 5,well..5 along with 2 are PRIME NUMBERS so you can only multiply by 1 to get 5 or 2 however you CAN multiply/add two numbers to get 10. and it just so happends that 5x2=10. if you work backwords than you can get y=xto the 2nd power+3x-10. Thus By working backwords and mutiplying/deviding your fators you will get the correct answer!

I hope this helps you!

(P.S please mark me as brailyest)

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

the answer is option a you would get more money.it would be $250.

step-by-step explanation:

for option b 200/2=100=50% 100/2=50=25% 50/5=10=5% it would be $220