Simplify: 7.2(2.8r-4.5s)+9.34r-1.25sa.) 29.5r - 33.65sb.) 10.82r + 31.15sc.) 10.82r - 31.15sd.) 29.5r + 33.65s

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Simplify (8x2 − 1 + 2x3) − (7x3 − 3x2 + 1). −5x3 + 11x2 − 2 5x3 − 11x2 + 2 x3 + 2x2 + x3 x3 − 2x2 − x3