If the problem looks like mine, the answer is 152.
<span>Let the first number be x.
Then the second number is 3x.
Then the third number is (x+100).
Sum of the numbers=500
x+3x+(x+100)=500</span>
<span>4x+(x+100)-500=0
</span><span>5x=400</span>
<span>x=80
</span><span>The first number is 80.
The second number is 240.
The third number is 180.
We can check by adding all three of those numbers together: 80+240+180 = 500
</span>
Hope this helps! If you have any questions just ask!
Part A The equation to model this would be
240-( 240- 6.5x + 9) = y
x is the minutes the balloon decreases in altitude
Part B plug in x
240- (240 - 6.5(15) + 9) = y
y = 106.5
expression answer: 106.5
Part C altitude is 133.5 (240 - 106.5)
Answer:
Step-by-step explanation:
1: 1/2
2: about 1 1/2 hours
