C
She'd have to have given her more than 48 dollars to receive more than 30 dollars back
It can't be D because that implies she could've received exactly 30 dollars in change and the question states she received more than that.
Answer:
Answer:x=
−3z−1
0
Step-by-step explanation:x=
Step 1: Add -2x to both sides.
2x+3z+4+−2x=2x+3+−2x
3z+4=3
Step 2: Add -3z to both sides.
3z+4+−3z=3+−3z
4=−3z+3
Step 3: Add -4 to both sides.
4+−4=−3z+3+−4
0=−3z−1
Step 4: Divide both sides by 0.
0
0
=
−3z−1
0
x=
−3z−1
0
Answer:
1331.6
Step-by-step explanation:
Answer:
Step-by-step explanation:
The given equation is
For this function to have an inverse, we must restrict the domain, say 
We interchange x and y to get,
We now make y the subject to get;
We divide through by 16 to get;
We now take the square root of both sides to get;
Since 
, the inverse function is
Answer:
x=5
Step-by-step explanation:
2(x−1)/4=2(x+8)/13
Step 1: Cross-multiply:
2(x−1)*(13)=2(x+8)*(4)
26x−26=8x+64
Step 2: Subtract 8x from both sides.
26x−26−8x=8x+64−8x
18x−26=64
Step 3: Add 26 to both sides.
18x−26+26=64+26
18x=90
Step 4: Divide both sides by 18.
18x/18= 90/18
x=5
~Hope this helps~
