7. [-/1 Points] DETAILS SCALC9 6.2STAR.JIT.008. Find the domain of the function. (Enter your answer using interval notation.) f(x) = log2(x+7) Need Help? Watch It 8. [-/1 Points] DETAILS LARCALC11 5.2.041. MY NOTES ASK YOUR TEACHER MY NOTES ASK YOUR TEACHER Find the indefinite integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.) 9. [-/1 Points] sec x tan x sec x 8 dx DETAILS SCALC9 6.4.522.XP. MY NOTES ASK YOUR TEACHER Differentiate the function. f(x) = log 10 (x4 + 5) f'(x) = 10. [-/3 Points] DETAILS SCALC9 6.4STAR.062. MY NOTES ASK YOUR TEACHER In this section we modeled the world population from 1900 to 2010 with the exponential function P(t) = (1.43653 x 109) (1.01395), where t = 0 corresponds to the year 1900. According to this model, what was the rate of increase (in million/yr) of the world population in 1920? In 1955? In 2000? (Round your answers to two decimal places.) 1920 1955 million/yr million/yr 2000 million/yr 11. [-/1 Points] DETAILS SCALC9 6.3.514.XP. MY NOTES ASK YOUR TEACHER Find the limit. lim In(x - 25) x 5+ 18 Need Help? Watch It 12. [-/1 Points] DETAILS SCALC9 6.4STAR.037. MY NOTES ASK YOUR TEACHER Differentiate the function. y = x8 sin(x) y'(x) = Need Help? Watch It