Answer:
3 seconds
Step-by-step explanation:
Convert minutes to seconds: 5*60=300 seconds. 100 math facts in 300 seconds. 100/300=3. She solves a math question every 3 seconds (holy cr.ap that's fast)
B: 78.50
If you plug in 5 for r, then you get 3.14 * 25, which is equal to 78.5
Hope this helps!
Answer:
math.way will help
Step-by-step explanation:

Divide both sides by 25 to isolate x:
Answer:
x= - square root 141 or x= square root 141