9x-6+6x-1=98
15x+7=98
15x=105
x=7
hope this helps :)
Answer: 1) You forgot to change the sign over there. You have to subtract over there.
2) Just be careful while solving equations while changing the signs
Answer:
2,000
Step-by-step explanation:
The computation of the price that should be sold for making 25% profit is shown below:
Let cost price be x
Now the equation would be
(1,920 - x) ÷ x × 100 = (x - 1,280) ÷ x × 100
1,920 - x = x - 1,280
2x = 3,200
x = 1,600
Now the sale price would be
= 1,600 × 1.25
= 2,000
Answer:
$3,090.64
Step-by-step explanation:
We shall allocate a random letter to each value, with that I explain the formula.
Initial value of investment = $5,003.86 = P
Rate of interest = 3.7% = R
Compounding interval in a year = 365 = I
Total period = 13 years = T
Value of investment in compound interest formula shall be:

Now, putting values in the above equation:

= $8,094.50
Thus, interest earned = Total value of investment on maturity - Initially invested amount
= $8,094.50 - $5,003.86 = $3,090.64