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Rus_ich [418]
2 years ago
9

Evaluate the expression when p=7. 3p²

Mathematics
2 answers:
Sliva [168]2 years ago
5 0

Answer:

147

Step-by-step explanation:

p = 7
3(7)^2 = 3(49)
3(49) = 147

Hope this helped

NikAS [45]2 years ago
3 0

Step-by-step explanation:

the other answer is correct.

I will just try to give you a little bit more explanation about the why.

when you have a function definition or simply an expression using variables, these variables are nothing else but placeholders for actual values.

such expressions are like a recipe : a structure of instructions what to do, when you get the real ingredients.

so, when or function is like here

f(p) = 3p²

it simply means that as soon as we get a real value for p, we have to square this value and then multiply that result by 3. and that is then the functional result.

and indeed, we have a specific value for p : p = 7.

so, now, we take this "7" and put it in every place, where there is a "p" in the "recipe" (because it could be a much more complex function with multiple terms based on "p").

just like we would use e.g. real butter and put it into our dough in the way the recipe describes how and when to apply butter in general.

hence,

3×7² = 3×49 = 147

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2 years ago
A2+b2 = C2solve for a
lesantik [10]
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3 years ago
Suppose that each semester at a particular community college Manuel has to pay $1478 in tuition and $121 in fees.
Kamila [148]

Answer:

Step-by-step explanation:

<em>Let x be time, in semesters, remaining before Manuel graduates</em>.  We find that Manuel's expenses are:

$1478/semester in tuition, and

$121/semester in fees

1.  <u>x semesters remaining:  fees</u>

  Remaining cost for fees, y, is the product of the fee times the number of semesters, x:

y =($121/semester)*x

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2.  <u>x semesters remaining:  tuition</u>

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y = ($1478/semester)*x + ($121/semester)*x

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3.  <u>x semesters remaining:  tuition and fees</u>

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5 0
1 year ago
OMG HELP RN I GIVE BRAINLIST
natta225 [31]
Answer: B

The number 3 isn't included because the point isn't included.

The arrow points to the left, representing any number less than 3 to be a solution.

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2 years ago
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