Question 462488
{{{ R = -.0433t + 10.49 }}}
given:
(1)
{{{ R = 10.057 }}}
{{{ 10.057 = -.0433t + 10.49 }}}
Subtract {{{ 10.49 }}} from both sides
{{{ -.433 = -.0433t }}}
Divide both sides by {{{ -.0433 }}}
{{{ t = .433 / .0433 }}}
{{{ t = 10 }}}
The record was 10.057 sec in 1988 + 10 = 1998
(2)
{{{ R = 9.494 }}}
{{{ 9.494 = -.0433t + 10.49 }}}
{{{ -.996 = -.0433t }}}
{{{ t = 23 }}} (rounded off)
The record was 9.494 sec in 1988 + 23 = 2011