Please help!! Me estimate the line of best fit using two points in the line

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

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.

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?