Question 863697
"cost of renting a van for one day includes the flat rate plus a charge for each mile"
{{{C=A+B*M}}} where {{{M}}} is the number of miles, {{{C}}} is the cost.
So solve for {{{A}}} and {{{B}}}.
1.{{{A+107B=97.15}}}
2.{{{A+127B=106.15}}}
Subtract eq. 1 from eq. 2 to eliminate {{{A}}}
{{{A+127B-A-107B=106.15-97.15}}}
{{{20B=9}}}
{{{B=9/20}}}
Then use either equation to solve for {{{A}}}.
{{{A+107*(9/20)=97.15}}}
{{{A=9715/100-963/20}}}
{{{A=9715/100-4815/100}}}
{{{A=4900/100}}}
{{{A=49}}}
So then,
{{{C=49+0.45*M}}}