A) 4(25-3y)+5y=9
100-7y=9
91=7y
y=13
(-14,13)
b) 14-x=x-10
2x=24
x=12
(12,14)
c) 4x=12
(3,7)
d) 18.5x+10.4y=200
x+y=130
Answer: 
Step-by-step explanation:
It is important to remember that the fourth digit after the decimal point is in the ten-thousandth place.
Then, given the following number:
You can follow these steps in order ti round it to the nearest ten-thousandth:
1. You can identify that the digit in the ten-thousandth place is:
2. Identify the digit to the right of . This is:
3. Since:
You must round up. Increase the digit by 1. (Notice that 
, then the digit to the left of increases by 1 too). Then:
no way dude really? thats so cool
Answer:
The correct answer is Pete saves $2.10 by buying bulbs in packages of 3 for $6.39 each.
Step-by-step explanation:
Pete can buy daffodil bulbs in packages of 3 for $6.39 or in packages of 2 for $4.40.
He needs to buy 30 bulbs at a better price.
Money spent by buying bulbs in packs of 3 = 10 × 6.39 = $63.90.
Money spent by buying bulbs in packs of 2 = 15 × 4.40 = $66.
Money saved if bought in packs of 3 = 66 - 63.90 = $ 2.10.
Thus Pete should buy 30 daffodil bulbs in packages of 3 and save $2.10.
