we have

we know that

To multiply two binomial I can use the FOIL method

therefore
the answer is
the missing coefficient of the x-term is 
Step-by-step explanation:
here's<em> your</em><em> solution</em>
<em> </em><em>=</em><em>></em> Cost of 7 meter of clothe = ₹161
=> cost of 1 meter of clothe = 161/7
=> cost = ₹23
=> cost of 3 meter = ₹23*3. => ₹69
=> cost of 5 meter = ₹23*5 => ₹115
=> cost of 9 meter = ₹23*9 => ₹ 207
hope it helps
I'll do 1 and 8, and you should then be able to do 2 and 9!
For 1, we can multiply these separately - 3*4*9=108 and 5+7+2=13 (exponent multiplication is adding them!), so we have 108b^13
For 8, we can again add the exponents up to get (5/7)^8
Answer:
18
Step-by-step explanation:
f(x) = 2(1/3)^x
[x = -2]
f(-2) = 2(1/3)⁻²
= 2(9)
= 18