<span>If dog food costs $2 a pound and Cara buys 9 pounds, her expenditure on dog food is 9 x 2. This makes $18. If she has a total budget of $25 and spends $18 on dog food, she has $7 left over for treats (25 - 18 = 7). At $1 each, she can buy up to 7 treats.</span>
Answer:
Answer of this is... D... 2x-3
Step-by-step explanation:
I'm not sure what the ordered pairs due to you not providing them, but I can tell you the best way to see if they are solutions.
The best way to do so is by substituting the x and y values into the equation.
For example, if you had the ordered pair (5,2), then you would put the x coordinate in place of x and the y coordinate in the place of y.
Like so:
2 = -2(5)+6
The way you know if its a solution is if they equal the same thing.
Solution example:
2 = 2
Non-solution example:
5 ≠ 3
Hope that helped!
Answer:
1.5
Step-by-step explanation:
Area of a Triangle = b x h /2
2 times 1.5 is 3, divided by 2 is 1.5
Total number of students = 150.
Total number of books by all students = b books.
Average of number of books each student donated = (Total number of books denotend by all students) ÷ (Total number of students).
= b÷150 books by each student or b/150.
Hannah donated 3 times as many as the average number of books each student donated.
3 times of Average of number of books each student donated = 3 * b/150
= b/50.
Therefore, the expression for number of books Hannah donate = b/50
