Answer:

Step-by-step explanation:
We are given the equation:

and asked to solve for
. Therefore, we must isolate the variable on one side of the equation.
is being multiplied by 5. The inverse of multiplication is division. Divide both sides of the equation by 5.



Let's check our solution. Plug 3 in for x and solve.


This checks out, so we know our solution is correct.
The solution to 5x=15 is x=3.
Part A:
What is the cost of 5.15 pounds of ground beef, if 1 pound = $3.40
Multiply the cost of 1 pound per how many pounds there are:
3.40 * 5.15 = $17.51
It costs $17.51 for 5.15 pounds of ground beef at $3.40 per pound
Part B:
Assuming the cost of the burger is only determined by the cost of ground beef.
The cost of the 17 burgers is $17.51
We divide $17.51 by 17, to find out the cost of each burgr
$17.51 / 17 = $1.03
The cost of ground beef per burger is $1.03
Answer:
12(3+5)
Step-by-step explanation:
The greatest common factor is 12
12*3 + 12*5
12(3+5)
The answer is 45 yards. I am positive this is correct