Answer:<1=63.5
<2= 124 = 34+90
<3= 29.5 =59/2
<4= 90
<5= 54 108/2
<6=116.5
<7=121. 53+68
Step-by-step explanation:
Answer:
d) $8,100
Step-by-step explanation:
Given information:
- Money triples every 10 years
- Initial deposit = $100
- Number of years invested = 40 years
If the money triples (multiplies by 3) every 10 years,
then in 40 years time it will triple <u>4 times</u>, as 40 ÷ 10 = 4
⇒ Account balance after 40 years = $100 × 3 × 3 × 3 × 3
= $100 × 3⁴
= $8,100
<u>Proof</u>
In 10 years time the balance of the account will be:
$100 x 3 = $300
In another 10 years time, the balance of the account will be:
$300 x 3 = $900
In another 10 years time, the balance of the account will be:
$900 x 3 = $2700
In another 10 years time, the balance of the account will be:
$2700 x 3 = $8100
Written as a unit rate would be 5 dollars for each pounds.
I hope this helps!
One equation is...
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12.99 + (0.6)x = 15.39
