Answer: you just have to subtract 2.50 and 9.50
Step-by-step explanation:
Answer: 9x + 3y = 12
Alternative forms: y = 0.4 OR y =
Answer:
y=3x-1 (replace x with 7 )
y=3 (7)-1
y= 21-1
y= 20
note: multiply 3 with seven and minus 1 the answer is y so y=20
Let's solve :
therefore, the correct choice is :