4.95 divided by 3 is 1.65 per sandwich. 6.72 divided by 4 equals 1.68. 3 sandwiches for 4.95 is the better buy.
A graph can increase or decrease at an interval or several intervals
- The interval with the longest curve or line represents the greatest change.
- The intervals with the greatest rate of change are ab and de
- The intervals with the least rate of change are bc and cd
- The intervals with the equal rates of change are ab and de
<u>Part A: How to determine the longest interval</u>
The longest interval will have a great change in the y-values, and a small change in the x-values.
An instance of such interval is interval ab
<u>Part B: Intervals with the greatest rate</u>
Intervals ab and de have equal rates, and they cover the same vertical and horizontal distances, as described in (a) above.
Hence, intervals ab and de have the greatest rate of change
<u>Part C: Intervals with the least rate</u>
Intervals bc and cd have equal rates, and they cover the same vertical and horizontal distances,
Hence, intervals ab and de have the least rate of change
<u>Part D: Intervals with the equal rate</u>
As said in (b) and (c),
- Intervals ab and de have equal rates
- Intervals bc and cd have equal rates
Read more about intervals and rates at:
brainly.com/question/23483858
Answer:
p = y+3
Step-by-step explanation:
Your answer is
a-4a
= 1a-4a
= -3a
Answer: the speed of the current is 6 mph
Step-by-step explanation:
Let x represent the speed of the current.
Logan is driving a boat that has a speed of 18 mph in standing water.
Assuming the current slowed down the boat while she was going up(upstream), it means that his total speed was (18 - x) mph
Also, if the current helped the boat while she was going down(downstream), it means that his total speed was (18 + x) mph
Time = distance/speed
The boat travels 4 miles each way. The time taken to travel upstream is
4/(18 - x)
Time taken to travel downstream is
4/(18 + x)
The round trip took 0.5 hour. It means that
4/(18 - x) + 4/(18 + x) = 0.5
Multiplying through by (18 - x)(18 + x), it becomes
4/(18 - x) + 4/(18 + x) = 0.5(18 - x)(18 + x)
4(18 + x) + 4(18 - x) = 0.5(18 - x)(18 + x)
72 + 4x + 72 - 4x = 0.5(324 + 18x -
18x - x²)
144 = 0.5(324 - x²)
144 = 162 - 0.5x²
0.5x² = 162 - 144
0.5x² = 18
x² = 18/0.5 = 36
x = √36
x = 6
