3 years ago

Can someone please explain how to answer #18?

Mathematics

1 answer:

swat323 years ago

4 0

Sorry, what grade is that for? might need to learn that right away

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an electrician charges a set fee of $150 for every house call and then charges an additional $70 per hour. write an equation for

Artyom0805 [142]

Answer:

y = 70x + 150

Step-by-step explanation:

y-intercept: 150

slope: 70x

Let x represent the amount of hours the electrician spent in the house.

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2 years ago

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Marina86 [1]

Answer:

5/2 i think but i am not sure sorry if its wrong

Step-by-step explanation:

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3 years ago

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frosja888 [35]

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3 years ago

How many subsets of at least one element does a set of seven elements have?

Tomtit [17]

$\boxed{\large{\bold{\blue{ANSWER~:) }}}}$

For each subset it can either contain or not contain an element. For each element, there are 2 possibilities. Multiplying these together we get 27 or 128 subsets. For generalisation the total number of subsets of a set containing n elements is 2 to the power n.

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