What is the degree of the polynomial −6x^3y^2+5x^4−7z? this was the only question i am stuck

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined

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

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *