16x^4-24x^3+20/-4x need on this problem

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?