Step 1. Apply FOIL method. bb+b*2+8b+8*2
Step 2. bb+2b+8b+8*2
Step 3. Add similar elements. bb+10b+8*2
Step 4. Apply exponent rule. b^2+10b+8*2
Step 5. Multiply the numbers. b^2+10b+16
b^2+10b+16 is your answer.
(2(3x4))+(2(4x8))+(2(3x8)) = 24+64+48 = 136
Answer: C
Answer:
To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them. If the reduced fractions are all the same, then you have proportional ratios.
Step-by-step explanation:
<span><span>Equations:
</span><span>
8c + 4t = 45
3c + 2t = 20
Modify for elimination: ( multiply 2</span>nd<span> eq by -2)
</span><span>
8c + 4t = 45
-6c + -4t = -40</span></span>
<span>
<span>
Subtract and solve for "c":
2c = 5
c = $2.50 (cost of one chair)
Solve for "t":
3c + 2t = 20
3(2.50) + 2t = 20
7.50 + 2t =20</span></span>
2t=12.50
<span><span>T= 12.50/2 =6.25
</span>
t = $ 6.25 (cost of one table)</span>
Table = 6.25 each
Chair = 2.50 each
Check:
3(2.50) + 2(6.25) =
7.50 +12.50 = 20
8(2.50) + 4(6.25) =
20.00 + 25.00 = 45.00
6 x 6 equals 36 because that is the answer.
