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guajiro [1.7K]
3 years ago
13

Please help me with this I have absolutely no idea what the answer is please please help ASAP!!!!!

Mathematics
1 answer:
11111nata11111 [884]3 years ago
7 0

Answer:

A. Her expenses are $25 per week.  

Step-by-step explanation:

Using a linear function f(x) = mx + b, m= slope and b = y-intercept or initial value.  With the values of the given function:  E(x) = 7x - 25, we can determine that the overall earnings (E(x)) is based on a profit of $7 per door ('x') and that if Jessica is subtracting $25 from her earnings, that this must be the cost per week for her expenses.  So, she would need to knock on a minimum of 4 doors each week in order to make a profit.

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Hugo is buying DVDs that cost $15 each. He has a coupon for $5 off his total purchase. Write an equation to find the c the total
Allisa [31]

Answer:

85

Step-by-step explanation:

15 times 6 is 90. This is how much money he spends on 6 DVDs if they're all $15. 90 subtracted by 5 (remember - he gets $5 off his entire purchase, not just each individual DVD) would be 85!

4 0
3 years ago
What is the sales tax on a breakfast order that totals $10.50 when tax is 5%
Alecsey [184]
First, you would need to create an equation for this problem. Let x represent the unknown tax. 
\frac{x}{10.50} = \frac{5}{100}

Next, you would cross multiply. 
100x = 52.5

Now, all you would have to do is isolate the x. To do this, you would divide both sides by 100. 
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I hope this helps!
5 0
4 years ago
How do you solve 2m-16=48 ??
konstantin123 [22]
Add like terms first,
2m = 48 + 16
2m = 64
m = 64/2
m = 32

8 0
3 years ago
The value of a collectible coin can be represented by the equation y = 2 x + 15, where x represents its age in years and y repre
Masteriza [31]

Answer:

53$

Step-by-step explanation:

They tell you the equation of how much the coin is worth after x amount of years

Step 1: Substitute x=19 into the equation y=2x+15

y = 2(19) + 15

Step 2: Solve for y

y = 2(19) + 15

y = 38 + 15

y = 53

Therefore the coin is worth 53 dollars after 19 years

7 0
3 years ago
Read 2 more answers
Need help with math problems
mrs_skeptik [129]
Ok like what kind of math problems
3 0
3 years ago
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