Answer:
Yes is linear because there is a constant rate of change this is also a function
Slope intercept for is y = -2x+4
1. check the pic at the bottom.
2. Since we are asked for percentage, so a ratio, let the number of kids with both umbrellas and raincoats be 8.
Let x be the number of children with raincoats, but not umbrellas
Let y be the number of children with umbrellas but not raincoats.
3. Then, x+y+8=100 (100% is 100, since we assumed 8% to be 8 kids)
this gives us x+y=92.
4. "The total number of kids with umbrellas is twice the total number of kids with raincoats. " :
8+y=2(x+8)
8+y=2x+16
y-2x=8
5. substitute x=92-y in y-2x=8, we get
y-2(92-y)=8
y-184+2y=8
3y=192
y=64
64% ofkids bring only an umbrella.
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Hope its right.
1. What you want to do is do is to know 2x is the ratio and x; $140,000 is the 1 brother investment and total is $1,600,000
2. Put them together 2x (140,000 + x + 2x) = 1600,000
3. 280,000 + 2x + 4x = 1600,000
4. 280,000 + 6x = 1600,000
5 1600,000-280,000= 1320,000 /6
6. They each invested $220,000
Divide 3/4 which is 0.75 and then multiply that by 20 which is 15 Final answer:15