Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
1 answer:
Answer:
(1)
(2)
We can solve for y from equation (1) and we got:
(3)
And replacing (3) into (2) we got:
And solving for x we got:
And solving for y from (3) we got:
And the solution would be x = 50 and y =75
Step-by-step explanation:
For this problem we have the following system of equations:
(1)
(2)
We can solve for y from equation (1) and we got:
(3)
And replacing (3) into (2) we got:
And solving for x we got:
And solving for y from (3) we got:
And the solution would be x = 50 and y =75
You might be interested in
The formula for calculating the simple interest is given by
Here, P = Principle amount
r = annual interest rate in decimal
t = time in years.
Now, if we invest for months or week then in order to find the simple interest, we must convert the units in years.
Therefore, d is the correct option.
d) Interest rates are annual, so you must convert the units into years.