What is the length of segment ac? (picture attached)

Indicate the formula for the following conditions: p^c(n,r)=

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.)

Which equation can be solved to find x the measure of jk in the apex