Janet bought a pair of sandals for $120.00. She needs to pay the 7% sales tax. How much will Janet pay in sales tax?
2 answers:
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Hi there!
We know that the formula for the area of a rectangle is height * width. Thus, we can multiply these two expressions together:
Now, we know through the distributive property that we can distribute the to everything in the parenthesis. Once this is done, we get:
Now, we know through the power rule that when two exponents are multiplied together with the same base, the exponent can be added together . This then would make our equation:
Giving us for our final answer:
Hope this helps!
The inequality is
write 7 as 7b/b to have all the expressions in common denominator:
here b=1 is a root and b=0 is not in the domain of the expression, but it still has an effect in the sign of the expression.
the sign table of
is :
+++++++[0] --------[1] +++++
this means that for values of b to the left of 0 and to the right of 1, the expression is positive, and for values of b in (0, 1), the expression is negative.
that is
for b∈(0, 1)
Answer: (0, 1)
write 7 as 7b/b to have all the expressions in common denominator:
here b=1 is a root and b=0 is not in the domain of the expression, but it still has an effect in the sign of the expression.
the sign table of
+++++++[0] --------[1] +++++
this means that for values of b to the left of 0 and to the right of 1, the expression is positive, and for values of b in (0, 1), the expression is negative.
that is
Answer: (0, 1)