$1,047.50 so she has to pay that amount
So it would be
40-.07(40)=b
B=37.2 dollars
Answer: the second bubble down the first row
Step-by-step explanation:
when you plan the coordinate you need to use 1,2,3,4 to get the simplest answers.
The numbers are "x" and "y",
we suggest this system of equations.
x+y=24
x-y=15
solve by reduction method.
x+y=24
x-y=15
-----------------
2x=39 ⇒x=39/2=19.5
x+y=24
-(x-y=15)
-------------------
2y=9 ⇒y=9/2=4.5
The numbers are 19.5 and 4.5
To check
19.5+4.5=24
19.5-4.5=15
