The equation that would best describe the situation would be the first option. To solve this question, simply break down the question into sections and then use variables X and y to represent each of the things asked for in the problem. We know the following:
X = no of tetra fish
Y = no of goldfish
If there is twice as much goldfish than tetra fish, then it would be 2y.
X = 2Y.
Then knowing what X and y represent, find the equation that gives the total cost of fish he bought, knowing that 1.50 is for a goldfish and 2.00 is for a tetra fish.
an explicit formula for the arithmetic sequence -5,13,31,49 is .
<u>Step-by-step explanation:</u>
Here we have an arithmetic sequence -5,13,31,49 . We need to find an explicit formula for the arithmetic sequence .Let's find out:
Let be terms of an A.P , common difference is :
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We know that general term of an Arithmetic Progression ( A.P) is :
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So , Here we will have
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Therefore , an explicit formula for the arithmetic sequence -5,13,31,49 is .
Andy's Salary decreases by 40% in the week he was ill.
Step-by-step explanation:
Step 1;To find the percent by which Andy's salary decreases we must find the difference between the maximum salary and the obtained salary. The maximum salary is the amount of money he would have gotten if he went all days. The maximum salary is $200 a week. The salary that Andy got for working the previous week was $120.
Difference in salaries = Maximum salary -Obtained Salary = $200 - $120 = $80
Step 2; To find the percent decrease in salary in terms of maximum salary, we divide the difference in salaries by the maximum salary. We multiply this value by 100 to get it in terms of percentage.
Percent decrease in Andy's salary =Difference in salaries/Maximum salary*100
= $80/$200 * 100 = 0.40 * 100 = 40%
So Andy's salary decreases by 40% in the week he was ill.
Option b. domain: {−12,−8, 0, 1} range: {0, 8, 12} is the right answer
Step-by-step explanation:
When the relation is given in the form of a table the x-values are the input to the function, hence domain and the y-values are the output of the function hence range.
Given table is:
[x] -12, -8, 0, 1
[y] 0, 12, 0, 8
The domain will be: {-12,-8,0,1}
And Range = {0,8,12}
Hence,
Option b. domain: {−12,−8, 0, 1} range: {0, 8, 12} is the right answer
Keywords: Functions, domain, range
Learn more about domain and range at:
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Step-by-step explanation:
solve it through simultaneous equations
for fun guys : 10+6.5x=y
for game bank : 22+3.5x=y
10+6.5x=22+3.5x
3x=12
x=4
cost is same when game rentals =4
that cost= $36