David is buying a television that is regularly priced at $450.The television is on sale for 20% off. Sales tax is 7%.Whicj expre
1 answer:
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Using a system of equation, we have that:
a)
- x, which is the cost of on-site service.
- y, which is the cost of at-store service.
- z, which is the cost of by-mail service.
b)
The system is:
c)
The cost of one on-site repair service is of $90.
Item a:
The variables are:
- x, which is the cost of on-site service.
- y, which is the cost of at-store service.
- z, which is the cost of by-mail service.
Item b:
On-site service costs <u>3 times as much as at-store service</u>, thus:
By mail service costs <u>$10 less than at-store</u> service, thus:
Last week, the shop completed <u>15 services on-site, 40 services at-store, and 5 services by mail for total sales of $3100</u>, thus:
The system is:
Item c:
- The cost of one on-site repair service is x.
- First, replacing the first two equations into the third, we find y, and then with it we find x.
Then
The cost of one on-site repair service is of $90.
A similar problem is given at brainly.com/question/24823220
Answer:
See attached graph
Step-by-step explanation:
The equation is y-3=(x + 6)
Write the equation in a slope intercept form, then graph the equation on a graph tool to see the points that line on the line.
Alternatively , using the coordinates in the answer choices given, input them in the equation of the graph and select the answer choice that has all its coordinates true to the equation.
y-3 = x+6 -----can be written as : y= x+9
Graph y= x+9 to see the graph and the points that are on the line as attached.
Maximum production p=552728
Step-by-step explanation:
The equation for maximum production is :
The number of units of labor is x @$72
The number of units of capital is y @$40
The total cost of labor and capital is limited to $270,000, this can be written as;
72x+40y ≤ $270,000
Graphing the inequality to find values of x and y ,from the graph;
x=3750 units
y=6750 units
Applying the expression for maximum production
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Inequalities graphs :brainly.com/question/11386040
Keywords: maximum, production,cost, labor,limited to,capital ,unit
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