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Airida [17]
3 years ago
8

Range of function f(x)=3x-12 for the domain {-2,2}

Mathematics
1 answer:
Mandarinka [93]3 years ago
6 0
I think (x-12)/3 right?
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Eli started saving money in his empty piggy bank. He inserted $1 on every Monday, $2 on every Tuesday, $3 on every Wednesday, $4
Tanzania [10]

Answer:

Tuesday

Step-by-step explanation:

Given:

Monday: $1

Tuesday: $2

Wednesday: $3

Thursday: $4

Friday: $5

Saturday: $6

Sunday: $7

And after 24 days he had $93

____

So lets convert 24 days into weeks. A week has 7 days we divide 24/7 and get 3.42857 weeks or just have it as 3 weeks and 3 days.

24 days = 3 weeks and 3 days

Now we want to know how much does Eli make in 1 week, we add all the numbers 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28

Eli makes $28 in one week. And (28x3) in three weeks which is $84.

Now that we know that Eli made $84 in three weeks, we have three days left - now we calculate the difference.

93 - 84 = 9

Now these 9 dollars are split into three days. This means he started on Tuesday since Saturday is $7 and Monday is $1 and that sums it up to $8 and the first dollar was placed in his piggy bank on a Tuesday.

6 0
3 years ago
Camryn puts $400 into a savings account that earns 6% annually. the amount in her account can
mylen [45]

The exponential function that approximates the amount of money in her account using a weekly growth rate is:

c_w(t) = 400(1.001154)^{\frac{t}{52}}

<h3 />

What is an exponential function?

An increasing exponential function is modeled by:

A(t) = A(0)(1 + r)^t

In which:

  • A(0) is the initial value.
  • r is the growth rate, as a decimal

In this problem, the yearly function is:

c(t) = 400(1.06)^t

Considering that a year has 52 weeks, we have that:

0.06/52 = 0.001154

Hence:

c_w(t) = 400(1.001154)^{\frac{t}{52}}

More can be learned about exponential functions at brainly.com/question/25537936

#SPJ1

7 0
2 years ago
While attempting to multiply the expression (2-5i)(5+2i) a student made a mistake.
julsineya [31]

Answer:

The left side of the equation is ignored

i is treated as -1, which it is not, it is instead the square root of negative 1.

To solve it properly we get:

(2 - 5i)(5 + 2i)

= 10 + 4i - 25i - 10i²

= 10 + 21i + 10

= 20 - 21i

4 0
3 years ago
Read 2 more answers
$66.25 divided among 4 people
Serjik [45]
The actual answer would be $16.5625 but you can just say $16.5
7 0
3 years ago
Ryan is thinking of a number. when he multiples this number by 6 and then subtracts 15 from it, he ends up with his original num
NemiM [27]

Answer:

3

Step-by-step explanation:

3 times 6 is 18. Subtract 15 from 18 and you get 3.

3 * 6 = 18 - 15 = 3.

I hope that helps.

5 0
3 years ago
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