Multiply (x + 1)3
(x + 1)2 = (x + 1)(x + 1)2
= (x + 1)(x2 + 2x + 1)
=x+
3 x2+2
DONE

thus, the first answer choice, y = sec x, is the correct one

for certain loans like mortgage loans, lenders scrutinize your debt to income ratio when you are applying for credit because it them evaluate your ability to repay your debts.

the answer should be 3.54 g/cm^3