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f(0)=3*0-5=-5
3x-5=0
3x=5
x=5/3
=====================================================
f(0)=3*0-5=-5
3x-5=0
3x=5
x=5/3
=====================================================
F ( x ) = 5^x+ 2; g ( x ) = 5^-x + 6
1 answer:
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Answer: There are 97 nickels and 108 quarters.
Step-by-step explanation:
Let x = Number of nickels, y = Number of quarters.
As per given,
x+y = 205 ...(i)
0.05x+0.25y = 31.85 ... (ii) [1 nickel = $0.05, 1 quarter = $ 0.25]
Multiply (ii) by 20, we get
x+5y=637 ...(iii)
Eliminate (i) from (iii)
4y = 432
⇒ y = 108 [Divide both sides by 4]
Put value of y in (i), we get
Hence, there are 97 nickels and 108 quarters.