Answer:
20
Step-by-step explanation:
100 / 5 = 20
B c + 7.5a
C 15(c + a)
D 7.5(c + a)
The total money earned by the company from the sale of tickets in expression is 7.5 (c+a).
An expression is a combination of numbers, variables, functions (such as addition, subtraction, multiplication or division etc.) Expressions can be thought of as similar to phrases.
According to the question
A theater company charges $7.50 per ticket for people of all age groups.
The total number of children who bought tickets = c
The total cost for children who bought tickets = $7.50c
The total number of adults who bought tickets = a
The total cost for adult who bought tickets = $7.50a
The total money earned by the company from the sale of tickets
= The total cost for children who bought tickets + The total cost for adult who bought tickets
= 7.50c + 7.50a
= 7.5 (c+a)
Hence, The total money earned by the company from the sale of tickets in expression is 7.5 (c+a).
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if 0 < x ≤ 450, y = $60.
if 450 < x ; y = $60 + (x - 450min) × $0.35
Here x will represent the number of minutes.
so if 0 < x ≤ 450, y = $60.
And,
if 450 < x ; y = $60 + (x - 450min) × $0.35
where we use (x - 450) ×$0.35 since any minute after the 450 minute mark is considered an extra time.
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Answer: if 0 < x ≤ 450, y = $60.
if 450 < x ; y = $60 + (x - 450min)*$0.35
Step-by-step explanation:
Here x will represent the number of minutes.
with $60 you have 450 minutes, and you must pay 60 regardless of how much minutes you use.
so if 0 < x ≤ 450, y = $60.
now, if you call for more than 450 minutes, you get an additional of $0.35 per minute, then we have:
if 450 < x ; y = $60 + (x - 450min)*$0.35
where we use (x - 450)*$0.35 because any minute after the 450 minute mark is considerated an additional time.
So our piecewise function is:
if 0 < x ≤ 450, y = $60.
if 450 < x ; y = $60 + (x - 450min)*$0.35
Answer:
Step-by-step explanation:
x = pens and y = pencils
4x + 5y = 6.71....multiply by 5
5x + 3y = 7.12....multiply by -4
--------------------
20x + 25y = 33.55 (result of multiplying by 5)
-20x - 12y = - 28.48 (result of multiplying by -4)
--------------------add
13y = 5.07
y = 5.07 / 13
y = 0.39 <=== cost of a pencil
4x + 5y = 6.71
4x + 5(0.39) = 6.71
4x + 1.95 = 6.71
4x = 6.71 - 1.95
4x = 4.76
x = 4.76/4
x = 1.19 <==== cost of a pen