Answer: 5 up 10 over
Step-by-step explanation:
I had this on my quiz
Answer:
y=1.76x+32
Step-by-step explanation:
Hope this helps
18 water of bottels in each case
you need to divide to know how many in each case
Let a and b be store A and store B, respectively. Then:
3a+b=63
5a+4b=140
So
12a+4b=252
5a+4b=140
7a=112
a=16
b=15
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Let x be the time at 11 mph, and let y be the time at 15 mph.
x + y = 45 ............(1)
Therefore:
y = 45 - x ............(2)
Now we can write the equation for the total calories required:
6x + 9.75y = 300 ........(3)
Plugging the value for y from equation (2) into equation (3), we get:
6x + 9,75(45 - x) = 300 .......(4)
which simplifies to:
-3.75x = -138.75
x = -138.75/-3.75 = 37 minutes.
The answer is 37 minutes at 11 mph and 8 minutes at 15 mph.