Sam predicted that he would sell 15 mugs, but he actually sold 20 mugs. which expression would find the percent error

The cost c, in dollars, for bananas depends on the weight w, in pounds, of the bananas. this situation is represented by the function rule c=0.5w (graph each function rule. tell whether the graph is continuous or discrete)

Answer this 30 points and brainliest!

The area of each triangle is 7 square units. the surface area of the triangular prism is