HEY THERE.
THE CORRECT ANSWER IS 36/63 = 4/7
Hope this helps you
John exercised 20% more than Toby. So the number of hours that John exercises per week is 14 + 0.2(14) = 14 + 2.8 = 16.8.
Jenny exercises two more hours than John. So the number of hours that Jenny exercises per week is 16.8 + 2 = 18.8.
So an expression representing the number of hours that Jenny exercises after w weeks is 18.8w.
Answer:
Step-by-step explanation:
Let x be the number of hours
Rental A charges:
Rate per hour = $4.50
Rate for x hours = 4.50x
Equation: 15 + 4.50x
Rental B charges:
Rate per hour = $ 5
Rate for x hours = 5x
Equation: 12.50 + 5x
You could interpret them as system of equation and answer the question easily
from A
-4x + y + x + w =1
write in same form from A
as this system has five variables and four of them are unknowns it means the unique solution is not possible
So, det (A) = 0