X = girls
Y = boys
X + y = 428
Answer:
$42.40
Step-by-step explanation:
The horizontal axis is in fractions.
The three lightest are two
pounds & one
pounds. Each cost $4.40 per pound.
So cost = 4.40(5/8+5/8+6/8) = $8.8
Remaining costs 4.80 per pound. We add up the remaining and multiply by 4.80 to get their cost.
cost = 
Hence, total cost = 8.8 + 33.6 = $42.40
Answer:
after 1 hr = 20 after 2 hrs =<em> </em> 40 after 3 hrs = 80 160 n 3 hrs
Answer: x = 7, x = 1
Step-by-step explanation:
|x-4| = 3
we know either x-4 = 3 or x-4 = -3
x-4 + 4 = 3 + 4
x = 7
x - 4 + 4 = -3 + 4
x = 1