I am giving away 10 points to anybody who provides correct answers with explanations.

Which expression shows the sum of the polynomials with like terms grouped together

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

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.