The cheese shop operates and overhead percent of 20% of the selling price because of any overhead of $2.75 on it's cheese cutters if the cheese shop pays $8.50 for cheese cutters find the selling price the mark up in the net profit

Find dy/dx using implicit differentiation ln(20+e^xy)=y

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )