Answer:
we're missing some crucial information here, the fields that have options for instance. It'd be helpful to know those.
Explanation:
f(-4)= [Input the equation right? So (-5)^2+50, or just 25]
"...hikes 4 miles to the [seeing as x is negative, she's heading south?]"
"... elevation would be [ using the given elevation equation, it's 25 feet?]"
no clue on the interpretation bit, good luck.
and repeat, so 6? (5)^2+50, or 75, north.
6.5? (5.5)^2+50, or 80.25, north.