Aa a member of a music club you can order cds for $14.99 each the music club also charges 4.99 for each shipment the expression 14.99n + 4.99 represents the cost of n cds find total cost for ordering 3 cds

Which statements about these triangles is true

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)

If the discriminant if a quadratic equation is 4 which statement describes the roots?