X - the number of pencils
y - the number of pens
She has twice as many pencils as she has pens.
Tom borrows a pen, so she has y-1 pens. Now she has ten less pens than pencils.
Set 2y and y+9 equal to each other:
She has 9 pens.
Answer:
A) 
B) 
C) 
Step-by-step explanation:
Given the exponential expression, 
:
A) is equivalent to due to the Product Rule of exponents: 
.
Next, apply the Power-to-Power Rule of exponents: 
.
B) is equivalent to due to the Power-to-Power Rule of exponents: .
.
C) is equivalent to due to the Product-to-Power Rule of exponents: 
.
An equation that represents the depth of snow on Audrey's lawn, in inches, t hours after the snow stopped falling is S = 10 - 2t
In this question, there was a depth of 10 inches of snow on the lawn when the storm ended and then it started a melting at a rate of 2 inches per hour.
We need to write an equation for S in terms of t, snow representing the depth of snow on Audrey's lawn, in inches, t hours after the snow stopped falling.
So, the equation would be,
S = 10 - 2t
Therefore, an equation that represents the depth of snow on Audrey's lawn, in inches, t hours after the snow stopped falling is S = 10 - 2t
Learn more about an equation here:
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Answer:
F(-3) = -5
Step-by-step explanation:
I got it right on the test
