Answer:
Step-by-step explanation:
5y + 3 + 2y - 7
=7y - 4
Answer:
4.80
Step-by-step explanation:
add them up 4.80 dollars
X^2 + y^2 -4x27 (the numbers in bold means the multiplying a negative and a positive equals a negative)
x^2 + y^2 -(4x27) = x^2 + y^2 -108