Question 198225
r(x)={{{3x^3 - 2x^2 + x + 25}}} is good predictor of her income tax refund,
 where X is the number of years since 2000.
 use synthetic substitution to estimate alyssa's 2007 tax refund.
Not sure what synthetic substitution is; but using substitution: 
:
x = 7
:
r(x)={{{3(7^3) - 2(7^2) + 7 + 25}}}
:
r(x)={{{3(343) - 2(49) + 32}}}
:
r(x)= 1029 - 98 + 32
:
r(x) = $963