A:amount of money invested in the account with 3% simple interest
B: amount of money invested in the account with 4.5% simple interest
a+b=25000 ——>a=25000-b
0.03a+0.045b=900
30a+45b=900000
2a+3b=60000
2(25000-b)+3b=60000
50000-2b+3b=60000
B=10000
A=25000-10000=15000
The value of y when x= 2401 is -10
<h3>How to determine the value of x?</h3>
An inverse variation is represented as:

Where k is the proportionality constant
When y = -70, x = 49
So, we have:

Take the square root of 49

Multiply through by 7
k = -490
Substitute k = -490 in 

When x =2401, we have

Evaluate the square root

Divide
y = -10
Hence, the value of y when x= 2401 is -10
Read more about variation at:
brainly.com/question/14254277
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The first one is A the second is C and the third is B
Remember y=mx+b
Since y=2 that means it is a horizontal line at 2 on the y axis which means it does not have a slope. The slope would be zero.
Answer: 15
Step-step-explanation: