Answer
For a woman whose MRI count is 1,000,000, her IQ is expected to be 136.2.
For a woman whose MRI count is 850,000, her IQ is expected to be 133.31.
Work Step by Step
$ŷ =0.000017x+119.2$ (item (a))
First female ($MRI~count=x=1,000,000$):
$ŷ =0.000017\times1,000,000+119.2=136.2$
Second female ($MRI~count=x=830,000$):
$ŷ =0.000017\times830,000+119.2=133.31$
