Applications for a cellular phone cost $0.79 each. Ringtones cost $1.89 each. Write an algebraic expression that represents the
total cost of buying a applications and r ringtones.
1 answer:
Answer:
The answer to your question is: C = 0.79a + 1.89r
Step-by-step explanation:
Data
Cost = C
apps = $0.79 = a
ringtones = $1.89 = r
C = 0.79a + 1.89r
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Answer:
C. x = ±4
Explanation:
<u>Given two equation's</u>:
- y = 3x² + 15
- y = 5x² - 17
Solve them simultaneously:
y = y
3x² + 15 = 5x² - 17
5x² - 3x² = 15 + 17
2x² = 32
x² = 16
x = ±√16
x = ±4
Answer:
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Hope it helped you!
