Answer:
It's A
Step-by-step explanation:
Got it right on the practice :)
Answer:
The answer to your question is letter c and d.
Step-by-step explanation:
A. 15 × 9 = 135 and 135 – 75 = 60 This answer is not correct because it is not necessary to multiply the # members by the cost of each tree, the answer is incorrect.
B. 3 × 15 = 45 and 45 + 15 = 60 This answer is incorrect because it's using a number 3 that is not part of the data.
C. 45 ÷ 9 = 5 and 5 × 15 = 75
. This answer is correct, first finds the number of tree bought by each member and after that multiply it by the cost of each tree.
D. 45 × 15 = 675 and 675 ÷ 9 = 75 This answer is correct, first found the total cost and after divide it by the number of members.
It has at least one or two solutions it depends on how you write it down
Answer: 
Step-by-step explanation:
1) Multiply the first equation by 3,and multiply the second equation by -5: 
, 
2) Simplify: 
, 
3) Add the equations to eliminate 
: 
4) Divide both sides by 
: 
5) Simplify: 
6) Substitute 4 for x in 
: 
7) Simplify: 
8) Subtract 
on both sides of the equation: 
9) Divide both sides by 
: 
10) Simplify: 
11) Write point:
