In new york state, sales tax rates vary by county. In Allegany county, the sales tax rate is 8 1.2%. A book costs $12.95 and a video game costs $39.90. Rounded to the nearest cent, how much more is the tax on the video game than the tax on the book? Plz help me within a few mins tysm!

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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)