6r-r + 8(15-r)+23-6 is it equivalent to 3r+137
2 answers:
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Let
x--------> the time in hours
y-------> the distance in miles
we know that
The speed is equal to
in this problem
<u>Equation First Train</u>
<u>Equation Second Train</u>
---------> equation
Substitute the values of and
in the equation
Solve for x
therefore
<u>the answer is</u>
If you're talking about #3, then the equation would be 10+12.50h=5+15h.
h will equal 2, and the cost for that number of hours would then be $35.
h will equal 2, and the cost for that number of hours would then be $35.