Answer:
c. 1 and 3
Step-by-step explanation:
To quickly solve this problem, we can use a graphing tool or a calculator to plot each equation.
Please see the attached image below, to find more information about the graph
s
The equations are:
1) y = sin (3x + π/6)
2) y = cos (3x - π/6)
3) y = cos (3x - π/3)
Looking at the graphs, we can see that the identical ones
are equations one and three
Correct option:
c. 1 and 3
Answer:
From step 4 to 9 is the required steps shown below.
Step-by-step explanation:
Given : Solution below,
To find : The error in the solution and what additional step needs to be completed?
Solution : The mistake is the step 3 and additional step need to be added after it.
Step 1 -
Step 2 -
Step 3 -
Step 4 -
Applying change base rule of logarithmic, 
Step 5 -
Step 6 -
Step 7 -
Step 8 -
Step 9 -
From step 4 to 9 is the required steps.
6 times $0.97 plus $2.64 minus 20 equals $11.54 remaining on the gift card.
Since the values are lowering each time and it is an arithmetic sequence, we can assume that each number is being subtracted by the same number. We can figure this out by setting up an equation taking two values from the sequence.
Let's use 36 and 6
36 - x = 6 which gives us 30. We can check our work by subtracting each value by 30 starting from 36.