Answer:
C
Step-by-step explanation:
Answer:
≈$12601.72
Step-by-step explanation:
Use the compounded interest formula:

In our case,
P = 3000
r = 8% = 0.08
n = 12 (months per year)
t = 18 (years in total)
Therefore, A ≈ $12601.72 (2.d.p.)
Answer:
x = 4
Step-by-step explanation:
(b)
= 5 -
x
Multiply through by 6 ( the LCM of 3 and 2 ) to clear the fractions
2(2x + 1) = 30 - 3x , distribute parenthesis on left side
4x + 2 = 30 - 3x ( add 3x to both sides )
7x + 2 = 30 ( subtract 2 from both sides )
7x = 28 ( divide both sides by 7 )
x = 4
Answer:
Amy has 12 5¢ coins
Step-by-step explanation:
Let <em>x</em> represent 20¢ coins and <em>y</em> represent 5¢ coins.
Amy has four more 20¢ coins than 5¢ coins. Hence:

And the total value of all her coins is $3.80. Thus:

This yields a system of equations:

We can solve by substitution. Substitute the first equation into the first:

Distribute:

Combine like terms:

And divide both sides by 0.25. Hence:

Thus, Amy has 12 5¢ coins.
Using the first equation:

Substitute:

Thus, Amy has 16 20¢ coins.
In conclusion, Amy has 12 5¢ coins and 16 20¢ coins.
Answer:
100.40
Step-by-step explanation:
if 6 members has paid, then the remaining 8 will be 8 x 12.55 = 100.4