Asubmarine hovers at yards below sea level. if it ascends yards and then descends again yards, what is the submarine's new position, in yards, below sea level?

What is the area of the trapezoid shown ?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)