Answer:
8,55
Step-by-step explanation:
use trigonometric functions
The way I would look at it is that Sophia types 15 words per minute faster than Patty so every minute Sophia is 15 minutes closer to what Patty has done. 510/15=34 so after 34 minutes Sophia will have caught up to Patty
Answer:
24+b
Step-by-step explanation:
Xavier has b more books than bernie so add b to bernie's 24 books
It is called 'down payment'.
Hope this helps! (Please rate) :)