peter keeps his pigs in a pen with a length of x+9 and a width of x-2. what is the area of peters pig pen

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

Solving algebraic equations 2m+3=11

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1