Answer:
10s²-6s+9
Step-by-step explanation:
C = -3 + 5s²
B = -2s + 5
2(-3 + 5s²) = -6 + 10s²
3(-2s + 5) = -6s + 15
10s² - 6s + 9
Answer:
The answer is the last one.
Step 1: Prioblem
Estimate the difference of 765 and 333. Explain your estimate.
Step 2: Concept and Method
Difference mean to subtract the smaller number from larger number.
Therefore,

Step 3: Final answer
= 432
Since there are 2 rows with 8 in each row, your equation is: C=2(8), where C stands for the number of chairs. 8x2, or 8+8, equals 16. There are 16 chairs set up.
Subtract 2x from both sides (5y=1-2x) then divide by 5 (y=0.2-2/5x)