USER VEGGIES i promise this is really the last one. pls answer and EXPLAIN Lisa gives her little brother Sam a 15-second (sec) head start in a 300-meter (m) race. During the race, Sam runs at an average speed of 5 m/sec and Lisa runs at an average speed of 8 m/sec, not including the head start. Since the time Lisa started running, which of the following best approximates the number of seconds that had passed when Lisa caught up to Sam?

A) 5
B) 25
C) 40
D) 55

It's C.

Step-by-step explanation:

Include his head start, add it with how long she ran for

Answer is C!

Step-by-step explanation:

Tricky, you have to find the number of seconds that have passed when she catches up **since the race started**

So you need to include his head start. Sam ran for 15 seconds, they both ran for 25, and Lisa catches up to him. Add those two times, and you get 40!

hope this helps :)

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse