Evaluate (1.28×105)+(1.13×103) in scientific notation. Then, (7.26×106)−(1.3×104). Lastly, find the mass of 480,000,000 bacteria if one bacterium has a mass of 2×10−12 gram.
Evaluate the following functions at x=3: f(x)=x−3, g(x)=x2−3x+5, h(x)=3x3+x+3, p(x)=x+4x2+1, f(x)=∣x−5∣. Also, for f(x)=x+8, find f(4), f(−2), f(−x), f(x+3), and f(x2+x+1).