Set up an algebraic equation: b=cost of ball
1.10=1+b+b
1.10=1+2b
subtract 1 from both sides
.10=2b
divide by 2 on both sides
ball=5 cents
Answer:
correct answer is 16. hope that helps
Answer:
![4x^2-16](https://tex.z-dn.net/?f=4x%5E2-16)
Step-by-step explanation:
-This is an addition/subtraction problem.
#We subtract the sum of the first two expression from the third expression:
![\#Add \ first \ two\\\\=3x^2 +4x+8 +2x^2-6x+3\\\\=5x^2-2x+11\\\\\# Subtract\ from \ the \ third\\=(9x^2-2x-5)-(5x^2-2x+11)\\\\=9x^2-2x-5-5x^2+2x-11\\\\=4x^2-16](https://tex.z-dn.net/?f=%5C%23Add%20%5C%20first%20%5C%20two%5C%5C%5C%5C%3D3x%5E2%20%2B4x%2B8%20%2B2x%5E2-6x%2B3%5C%5C%5C%5C%3D5x%5E2-2x%2B11%5C%5C%5C%5C%5C%23%20Subtract%5C%20from%20%5C%20the%20%5C%20third%5C%5C%3D%289x%5E2-2x-5%29-%285x%5E2-2x%2B11%29%5C%5C%5C%5C%3D9x%5E2-2x-5-5x%5E2%2B2x-11%5C%5C%5C%5C%3D4x%5E2-16)
Hence, the expression
must be added to the first two.