Domain : 
Range: 
Explanation:
It is given that Bev earns $2 a week.
Thus, for n number of weeks, we shall multiply $2 with n.
Where 
is the number of weeks.
For 1 week, Bev earns 
⇒ $2
For 2 weeks, Bev earns 
⇒ $4
For 3 weeks, Bev earns 
⇒ $6
For 4 weeks, Bev earns 
⇒ $8
Thus, we can see that the domain is the number of weeks.
Hence, Domain :
Also, the money earned is the range.
Hence, Range:
Answer:
Step-by-step explanation:
hello :
-3/7m<21
multiply by (-1) : 3/7m > 21
now dividid by 3/7 : m > 21×7/3
m > 49
60 divided by 1/5 (.2) is 300
Answer:
Jessie sold x DVDs for $<u>3</u> each and then sold a board game for $<u>12</u>. Jessie made (select) $27 in her sales. How many DVDs did she sell?
She sold 5 DVDs
Step-by-step explanation:
3x+12=27
3x=15
x=5
5 DVDS
Part 1:
For this case we must see in the graph the axis of symmetry of the given parabola.
We have then that the axis of symmetry is the vertical line t = 2.
Answer:
The height of the javelin above the ground is symmetric about the line t = 2 seconds:
Part 2:
For this case, we must see the time t for which the javelin reaches a height of 20 feet for the first time.
We then have that when evaluating t = 1, the function is h (1) = 20. To do this, just look at the graph.
Then, we must observe the moment when it returns to be 20 feet above the ground.
For this, observing the graph we see that:
h (3) = 20 feet
Therefore, a height of 20 feet is again reached in 3 seconds.
Answer:
The javelin is 20 feet above the ground for the first time at t = 1 second and again at t = 3 seconds
