−3x + 7y = −16 −9x + 5y = 16 slove this
1 answer:
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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:
17 teaspoons
Step-by-step explanation:
1 tbs : 3 tsp
Always start by converting mixed numbers into fractions;
multiply the whole number part by the denominator (under part) of the fraction part and add this to the numerator (upper part);
Then simply apply the ratio.
Answer: 918km^2
Step-by-step explanation:
Let x be the new dimension of the area;