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Korolek [52]
3 years ago
11

I would love your help! I'll give Brainliest answer!

Mathematics
2 answers:
Dovator [93]3 years ago
3 0
Since the graph is a straight line, its equation is of the form;

y = mx + c
Where m is the slope and c is the y intercept

We can use any two points on the straight line to find the value of m and c.

Let us use (0,30) and (4,150)

m =  \frac{150 - 30}{4 - 0}
This simplifies to,

m =  \frac{120}{4}  = 30
Let us substitute the value of m to obtain,

y = 30x + c
Substitute any of the points to find c. It is easier to use (0,30).

30 = 30(0) + c
c = 30
The equation of the graph now becomes,

y = 30x + 30
So in 10 weeks Ben will collect,

y = 30(10) + 30
y = 300 + 30
y = 330
Ben will collect 330 papers.


You can also use any two points to find the equation of this line.
Leya [2.2K]3 years ago
3 0

Answer: 330 pounds of paper

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a shopkeeper sold a certain number ( a two-digit number)of toys all priced at a certain value (also a two-digit number when expr
Makovka662 [10]

The answer is 91 toys sold, make the number ab where a is the 10th digit and b is the first digit. The value is 10a + b that can expressed as 10 (3) + 4 = 34

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He accidentally reversed the digits to: 10b + a toys sold at 10y + x rupees per toy. To get use the formula, he sold 10a + b toys but thought he sold 10b + a toys. The number of toys that he thought he left over was 72 items more than the actual amount of toys left over. So he sold 72 more toys than he thought:

10a + b =10b + a +72

9a = 9b + 72

a = b + 8

The only numbers that could work are a = 9 and b = 1 since a and b each have to be 1 digit numbers. He reversed the digits and thought he sold 19 toys. So the actual number of toys sold was 10a + b = 10 (9) + 1 = 91 toys sold. By checking, he sold 91 – 19 = 72 toys more than the amount that he though the sold. As a result, the number of toys he thought he left over was 72 more than the actual amount left over as was stated in the question.

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