Many students seem puzzled by function notation well after it has been introduced, and ask “why can’t we just write
y = 3x instead of
f(x) = 3x ?”. To motivate the use of function notation and improve understanding, I advocate using multi-variable functions instead of single-variable functions in introducing this notation. My introduction usually proceeds something like this:
Step-by-step explanation:
Since, the fundraiser only have three prices for books($2, $5 and $10), the number of $5 book that was sold is 12.
<h3>How to form equation and solve ?</h3>
The fundraiser only have 3 prices for books which are $2, $5 and $10.
There were 6 more $5 books sold than $10 books sold.
Let
x = number of $10 book sold
Therefore,
number of $5 books sold = x + 6
There are 8 more $2 book sold than $10 book sold. Therefore,
number of $2 books sold = x + 8
A total of $250 was raised.
Therefore, the total amount sold forms the following equation:
10x + 5(x + 6) + 2(x + 8) = 250
10x + 5x + 30 + 2x + 16 = 250
17x = 250 - 30 - 16
17x = 204
x = 204 / 17
x = 12
learn more on equation here: brainly.com/question/27361014
Answer:
Amanda
Step-by-step explanation:
Find the unit rate in each case and then compare the two rates:
4.5 km
-------------- = 1/2 km/min (Sam)
9 min
3.6 km
-------------- = 0.6 km/min (Amanda)
6 min
Amanda, riding at 0.6 km/min, can go further in 1 minute than Sam, who rides at 0.5 km/min.
Answer:
Richard is making $9.6 per hour now
Step-by-step explanation:
Given:
Initial amount Richard was earning = $10/hr
Due to lass in productivity 20% pay was cut
Amount Richard was earning after 20% pay cut = $8/hour.
After few again due to increase in productivity Diane gave a 20% raise.
To Find:
How much is Richard making now = ?
Solution:
Let the amount that Richard is making now be x
Then
x = 8+ 20% of 8
x = 
x = 
x = 
x = 9.6
Answer:Numerical digits are the number text characters used to show numerals. For example, the numeral "56" has two digits: 5 and 6
Step-by-step explanation:
