Answer:
I am only a 7th grader so I will probably get this incorrect but I think the correct answer is A.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Distribute 5 through the parentheses
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When there is a ( - ) in front of an expression in parentheses, change the sign of each term in the expression. Also, remove the parentheses
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Collect like terms
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Add the numbers : 15 and 4
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Hope I helped!
Best regards!!
One week from now, the amount will be ...
... $50 + 0.20×$50 = $50 + 10 = $60
Two weeks from now, the amount will be ...
... $60 + 0.20×$60 = $60 + 12 = $72
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The first expression can be factored to be $50 × (1 + 0.20) = $50×1.2.
The second expression can be factored the same way to be $60×1.2, or ...
... ($50×1.2)×1.2 = $50×1.2²
... = $50×1.44 = $72
Answer:
b = 13
Step-by-step explanation:
the value of the discount is a constant, while the total cost of the books is a variable because it depends of the purchase
We can write this equation
5b - 7 = 58
Solve it
1) add 7 at both members
5b -7 + 7 = 58 + 7
5b = 65
2) divide both membera by 5
b = 13
