Question 1123206
I will say {{{ c }}} = rate of spending in dollars/hr
Also {{{ C }}} = spending in dollars
Also, {{{ t 
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a)
1000 km @ 10 km/hr
{{{ c = 160 + (1/100)*v^3 }}}
{{{ c = 160 + (1/100)*1000 }}}
{{{ c = 170 }}}
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[ time in hrs ] = [ km ] / [ km/hr ]
[ cost in dollars ] = [ dollars/hr ]x[ hrs ]
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a)
{{{ C = c*t }}}
{{{ t = 1000/10 }}}
{{{ t = 100 }}} hrs
{{{ C = 170*100 }}}
{{{ C = 17000 }}}
$17,000
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b)
{{{ t = 1000/v }}}
{{{ c = 160 + (1/100)*v^3 }}}
{{{ C = ( 160 + (1/1000)*v^3 )*( 1000 /v ) }}}
{{{ C = 160000 /v + v^2 }}}