i think i know but looking at peoples answer now i am reconsidering my choices but anyway good luck i think u should use the other guy solution but anyway have a good day :>
Answer:
it is not possible result is not given so it is not possible
Answer:
B
Step-by-step explanation:
Let y = f(x) and rearrange making x the subject
y = x² + 7 ( subtract 7 from both sides )
y - 7 = x² ( take the square root of both sides )
±
= x
Change y back into terms of x, thus
(x) = ± 
Answer:
125
Step-by-step explanation:
mechanical energy is equal to the sum of kinetic and potential energy
100+25=125