Solve for x x+1=−10 x=? Tell me what x is
1 answer:
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9514 1404 393
Answer:
in order by function: 0.6, 8, 7/3, 2, 1/2
Step-by-step explanation:
The functions are given in the form ...
f(x) = a·b^x
The "b" value is the value immediately to the left of the exponent. (It's not rocket science; it's pattern matching.) Note that the minus sign in g(x) is part of 'a', not part of 'b'.
From the top-down, the functions listed on the left have the b-values shown above.
So the number of pencils bought can be represented by an equation: 
, where n is the number of notebooks bought. Since Helen bought 5 notebooks, simply plug 5 into n: 
. So Helen bought 12 pencils.