Mathematics, 03.11.2019 18:31 beluvangel418

Donna purchased a prepaid phone card for $20. long distance calls cost 14 cents a minute using this card. donna used her card only one to make a long distance call. if the remaining credit on her card is $13.84, how many minutes did her call last

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The question is saying that Donna made 1 call, which cost $0.14 per minute, while using a prepaid phone card with a value of $20. After that 1 call, she had spent $x to be left with $13.84 on the card.
To find how long the call was, you need to know how much she spent.
20 - 13.84 = 6.16
So Donna spent $6.16 on that 1 call.
$6.16 / $0.14 = 44
Donna's call lasted 44 minutes, as we can see, since she spent $6.16 and it costs $0.14 per minute.

Answer from: Quest

answer: sensy

step-by-step explanation:

Answer from: Quest

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

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