<span><span><u>Answer</u>
3.4 in words is: Three and four tenths
3.4 in expanded form 3+4/10
</span><span><u>Explanation</u>
Decimal points are fractions whose denominator is 10 or a power of 10. To write a decimal point in words we must be able to identify the place value of every digit.
3.4
3 is a whole number and its place value is ones and the place value of 4 is tenth.
So, 3.4 in words is: Three and four tenths
3.4 in expanded form 3+4/10</span></span>
Answer:
x= 3, y=1
Step-by-step explanation:
Question
a) What is the decay factor?
b) What is the percent decrease?
c) Estimate the number of black and white TV's sold in 1999.
Answer:
a. Decay factor = 0.85
b. Percent decrease = 15%
c. 19.363 million TVs were sold
Step-by-step explanation:
Given
Solving (a): The decay factor
An exponential function has the form
Where b is:
By comparison:
Solving (b): Percentage decrease:
Percentage decrease P is calculated as follows:
Substitute 0.85 for b
Convert to percentage
Solving (c): TVs sold in 1999
First, we need to determine the value of t for 1999
In 1997, t= 0
In 1998, t= 1
In 1999, t= 2
So, we substitute 2 for t in: