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3 years ago

Valerie earns $24 per hour. Which expression can be used to show how much money she earns in 7 hours?

Mathematics

2 answers:

GuDViN [60]3 years ago

8 0

B. because you are still multipying they just broke it down (7*24)= 168 , and b also = 168

hammer [34]3 years ago

6 0

B cause it is adding and multiplying

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to fill a coffee mug at a local shop costs $2.50. the shop sells coffee beans foe $12 per pound. each pound makes enough coffee

myrzilka [38]

Answer:

There are a few possible answers so read explanation, but the one I will put up here is:

20.83

Step-by-step explanation:

First you have to find how much 100 cups of coffee costs in store.

To do this you will multiply 2.50 by 100 and get 250. So now we know 100 cups of coffee in store costs $250 whereas 100 cups at home is $12.

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We don't stop there though, because it asks us to approximate. I am not sure what it would like us to round to, but here are some possible approximations:

20.83
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21

Any of those re reasonable approximations, you choose whichever you think the question wants, or whatever your teacher asks for.

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3 years ago

Kevin has 5 times more baseball cards than his brother, Billy. If Billy has c number of cards, how many cards does Kevin have

mylen [45]

The answer would be 5*C or 5C or 5(C) they all mean the same exact thing but if Kevin has 5 times as much no matter what billy has you’ll have to multiply that by 5 to see how much Kevin’s has so if billy has c then you multiply that by 5

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3 years ago

I'll give brainliest to whoever answers first and is correct!!

Nina [5.8K]

Answer:

(a) $y=8x+5$

(b) 7 hours.

Step-by-step explanation:

(a) Let x be the number of hours and y is the total cost.

We have been given that Beatrice and her friends charge $8 per hour of babysitting, so the charges for x hours of babysitting will be 8x.

As they also charge a mandatory $5 per day fee for each child for snacks, so the total charges for babysit each day will be charges for x hours of babysitting plus mandatory charge.

We can represent this information in an equation as:

$y=8x+5$

Therefore, the equation $y=8x+5$ represents the total cost of using Beatrice’s babysitting service each day.

(b) To find the number of hours Beatrice babysit the daughter, we will substitute y = 61 in our equation and solve for x.

$61=8x+5$