can someone help me im tryna finish as. much as pre-algebra as i can im leaving to vacation and i need to finsish allot of math! someone help :C

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

Which of the following is true for the relation f(x)=2x^2+1

Is this a polynomial function? i need to know asap