18x + 20 + x = 10x -3
Combine like terms
19x + 20 = 10x -3
Subtract 20 to both sides because whatever you do on one side you have to do it on the other side:
19x = 10x -23
Subtract 10x
9x = -23
Divide 9 to isolate x:
x = -23/9
Simplify to get a mixed number:
x = -2 5/9
Answer: Option 'B' is correct.
Step-by-step explanation:
Since we have given that
Principal amount (P)= $2500
Rate of simple annual interest (R) = 8.5%
Number of years (T)= 10
As we know the formula for "Simple Interest ":

Hence, Option 'B' is correct.
Answer:
47
Step-by-step explanation:
Assuming I = X
2(2) - 7(-4) + 3(2) + 9
4 + 28 + 6 + 9
10 + 28 + 9
38 + 9
47
((retail - cost) / retail) * 100 =
((5 - 3.5) / 5) * 100 =
(1.5/5) * 100 =
0.3 * 100 =
30% <==
Answer:
x = 8
Step-by-step explanation: