Find The ratio of black cell phone covers sold to the total number of cell phone covers sold last week then explain its meaning

Which is a graph of a proportional relationship?

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer