What is the answer to this equation x/6=3x/4

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)

What is the slope of the line (-7,2) (4,6)