Answer:
(21, 28)
Step-by-step explanation:
Multiply coordinates by 7.
First we have to figure out how much 3 bags cost using the total cost of $8.25
That means. we would do 8.25/3 and 8.25 divide by 3 equals 2.75.
Now we know that each bag costs approximately $2.75
All we have to do now is multiply 2.75 by 4 to get the cost for the total of 4 bags.
4 times 2.75 is exactly 11 dollars, if might change if theres tax.
But, the answer would be 4 bags costs $11.
<u>ANSWER:</u>
The solution set for the inequality 7x < 7(x - 2) is null set 
<u>SOLUTION:</u>
Given, inequality expression is 7x < 7 × (x – 2)
We have to give the solution set for above inequality expression in the interval notation form.
Now, let us solve the inequality expression for x.
Then, 7x < 7 × (x – 2)
7x < 7 × x – 2 × 7
7x < 7x – 14
7x – (7x – 14) < 0
7x – 7x + 14 < 0
0 + 14 < 0
14 < 0
Which is false, so there exists no solution for x which can satisfy the given equation.
So, the interval solution for given inequality will be null set
Hence, the solution set is 
Answer: Assuming the unit is dollars, the answer would be $5,010.
Explanation:
Step 1: 8000-300 is 7700.
Step 2: 7700-290 is 7410
Step 3: 7410-400 is 7010
Step 4: 7010-2000 is 5010
So, the answer is Anna has $5,010 dollars left after giving Jim $300, buying shoes for $290, a suit for $400 and spending $2,000 dollars on a new phone.