Answer:
Change per week: $20
Starting amount of money: $550
Step-by-step explanation:
<u>Given equation</u>:

where:
- x = number of weeks
- y = total account balance
<u>Change per week</u>
As the variable x represents the number of weeks, its coefficient represents the change per week in the amount of money.
Therefore, the change per week in the amount of money in the account is $20.
<u>Initial Balance</u>
The starting amount of money in the account (initial balance) will be the value of y when x = 0:

Therefore, the starting amount of money in the account is $550.
Answer: J
Step-by-step explanation: Since that the square root of the number 82.25 approximately equals 9.09
Then logically it lies between the integers
9 and 10
We can employ a simple repeated decimal trick:



###
Alternatively, we can compute the partial sum of the series.





As
, the second term vanishes and we're left with
. Notice that this is really just a more formal version of the earlier trick.
The answer is 80,00 pounds.
Answer:
4,9
Step-by-step explanation:
(1). 4,9 are not prime number
(2) 4=1×2×2
9 = 1×3×3
so,
HCF of 4,9 will be
= 1.