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Sholpan [36]
3 years ago
7

collen plans to print x pictures from her camara at a drug store. the expression $0.2x represents the cost of developing the pic

tures if she is not a member of the store's photography club. if she is a member, then the total cost is given by $0.15x+$10. how much more will collen pay by not being a member if she develops 350 pictures?
Mathematics
2 answers:
Alex_Xolod [135]3 years ago
6 0

Answer:

$70

Step-by-step explanation:

350 x .2 = $70

lutik1710 [3]3 years ago
4 0

Answer:

$7.50

Step-by-step explanation:

<u>If she is not a member:</u>

to print 350 pictures, she will pay 0.2 * 350 = $70

<u>If she IS a member:</u>

to print 350 pictures, she will pay 0.15(350) + 10 = $62.5

THus, the amount she saves is 70 - 62.5 = $7.50

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You want to rent a television Company A charges $50 per week plus a one-time fee of $15. Company B charges 130 per week plus a o
emmasim [6.3K]
Company A: y = 50x + 15
Company B: y = 130x + 55

Set the equations equal to each other and solve for x (number of weeks).
50x + 15 = 130x + 55

Subtract 50x from both sides:
15 = 80x + 55

Subtract 55 from both sides:
-40 = 80x

Did you have a typo? The companies will never have the same cost because company B costs so much more and weeks cannot be negative.
8 0
2 years ago
The area of a cross section perpendicular to the base of a rectangular prism is 45 square inches. If the length and width of the
Naily [24]

The height of the prism is 2.25 \ in

Explanation:

It is given that the area of the cross section of the rectangular prism is 45 square inches.

Length of the rectangular prism is 5 \ in

Width of the rectangular prism is 5 \ in

To determine the height of the prism, let us substitute these values in the formula SA=(2l+2w)h , we get,

45=(2(5)+2(5))h

Multiplying the terms within the bracket, we get,

45=(10+10)h

Adding the terms within the bracket, we have,

45=20h

Dividing both sides by 20, we get,

2.25=h

Thus, the height of the rectangular prism is 2.25 \ in

4 0
3 years ago
Round the number 15.39624 to 2 decimal places​
ivolga24 [154]

Answer:

answer is 15.40 because 9 is greater than 5 so 1 is carry over it .So answer is 15.40

7 0
2 years ago
If z varies jointly with x and y, x = 2 and y = 2, z = 7. Find z when x = 4 and y = 8.
Wittaler [7]

Answer:

56

Step-by-step explanation:

z varies jointly with x and y:

z = kxy

When x = 2 and y = 2, z = 7.

7 = k(2)(2)

k = 7/4

z = 7/4 xy

When x = 4 and y = 8:

z = 7/4 (4)(8)

z = 56

7 0
3 years ago
I need help with this problem​
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Answer:

2.1000x10^03

Step-by-step explanation:

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