Solve the following system of equations using the elimination method. 9x – 5y = –16 and –3x + 7y = –16 A)

(–4,–4)

B)

(–2,–3)

C)

(4,4)

D)

(0,–5)

When only separate discreet points are graphed it is called?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625