Answer
$f(10)=677$
$f(-3)=66$
Work Step by Step
$f(x)=7x^{2}-2x-3$
$f(10)=7(10)^{2}-2(10)-3$
$f(10)=7(100)-(20)-3$
$f(10)=700-20-3$
$f(10)=677$
$f(-3)=7(-3)^{2}-2(-3)-3$
$f(-3)=7(9)+6-3$
$f(-3)=63+3$
$f(-3)=66$
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