A long-jump competitor's best jump of 20 ft. 6 in. is 6 in short of doubling the length of his personal worst jump as a beginner. What was his personal worst jump?

#12 find the value of x. #13 find the value of the variable.

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18