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EleoNora [17]
3 years ago
11

What should I do ?? how do I do it

Mathematics
2 answers:
aev [14]3 years ago
6 0

Answer:

D

Step-by-step explanation:

national cell= 0.15t+5

world wireless= .19t

its asking for when world wireless is cheaper so

0.19t< 0.15t +5; t<125

adelina 88 [10]3 years ago
6 0

Answer:

d

Step-by-step explanation:because you need to remember that the flat fee is 5.00 so as long as you dont send 5.00 worthof texts with world wireless you save money vs having national cell .19t needs to be less than .15t+5 so d is the only logical anwer

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Last PreCalc Question, Need help with writing piecewise functions with graphs. Giving brainliest!
LekaFEV [45]

The piece-wise linear functions can be written as follows:

  • f(x) = x, x \leq -2.
  • f(x) = -x - 7, -2 < x \leq 1.
  • f(x) = 2x - 9, x > 1.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For x equal or less than -2, the line passes through (-3,-3) and (-2,-2), hence the rule is:

f(x) = x, x \leq -2.

For x greater than -2 up to 1, the y-intercept is of -7, and the line also passes through (1,-8), hence the rule is:

f(x) = -x - 7, -2 < x \leq 1.

For x greater than 1, the function goes through (2,-5) and (3,-3), hence the slope is:

m = (-3 - (-5))(3 - 2) = 2.

The rule is:

y = 2x + b.

When x = 2, y = -5, hence:

-5 = 2(2) + b

b = -9.

Hence:

f(x) = 2x - 9, x > 1.

More can be learned about linear functions at brainly.com/question/24808124

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5 0
2 years ago
Find the gcf of 15a and 28b^2. 9ab^2 0 3 1
lions [1.4K]
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GCF(15a; 28b²) = 1
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3 years ago
Indicate true or false as to whether the following equation is quadratic 2x-4x+1=0
saul85 [17]
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An investment broker puts 1/12 of his paycheck into a retirement account every quarter? How much of his $84,000 salary is put in
posledela

Answer:

<u>$7000</u> of his salary is put into this account each quarter.

Step-by-step explanation:

Given:

An investment broker puts 1/12 of his paycheck into a retirement account every quarter.

His salary is $84,000.

Now, to find how much is put into this account each quarter.

As given salary = $84,000.

So, amount to put into this account every quarter =

\frac{1}{12} of\ \$84,000.

=\frac{1}{12} \times 84000

=\frac{84000}{12}

=\$7000.

Therefore, $7000 of his salary is put into this account each quarter.

6 0
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Crazy boy [7]

Answer:

A: Step 1: 6x − 10 = 1; Step 2: 6x = 11

Step-by-step explanation:

First: remove parentheses by multiplying factors.

6x - 10 = 1

Second: Move the constants to the right side of the equation

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