use the information given to you to write an equation in standard form. Slope is 3, and (1,4) is on the line. Please include a s
tep by step explanation if you can.
1 answer:
Answer:
Step-by-step explanation:
okay so you know that the slope is 3, so every time the x goes up 1 the y goes to the right 3
so if you know that (1, 4) is on the line, then you will have to go down 1 and to the left 3 to decrease both the x and y values
1 - 1 = 0 4 - 3 = 1
(0, 1)
so this shows that the y-intercept is 1
making the equation:
y = 3x + 1
im sorry its not a good explanation but i hope it kind of makes sense
the line will look like this:
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Answer:
The company needs to sell either 30 or 40 items.
Step-by-step explanation:
We are given that the cost for selling <em>x</em> items given by the function:
And the revenue for selling <em>x</em> items is given by:
The profit function is the cost function subtracted from the revenue function:
Substitute and simplify:
To find how many items must be sold in order to obtain a weekly profit of $300, we can let <em>P</em> equal 300 and solve for <em>x</em>. So:
Solve for <em>x</em>. Subtract 300 from both sides:
We can divide both sides by -0.4:
Factor:
Zero Product Property:
Solve for each case:
So, in order to obtain a weekly profit of $300, the company need to sell either 30 <em>or</em> 40 items.