Need answers asap! y=2^x+3

What is the value of r of the geometric series?

Which table represents a linear function? i'll give brainliest to first answer ^'^

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.