All categories

2 years ago

A pre-paid cell phone plan has a flat rate of $15 with an additional cost of $0.15 per

Mathematics

1 answer:

Tresset [83]2 years ago

5 0

Answer:

anything less than 133 would be true

Step-by-step explanation:

35 ≥ 0.15m + 15

solve for m

subtract 15 from both sides

20 ≥ 0.15m

divide both sides by 0.15

133.33 ≥ m

m cannot be more than 133 minutes

You might be interested in

How are unlike fractions identified?

I am Lyosha [343]

C, because if it was D, they would be the same, which is A written in another format. Then process of elimination

3 0

4 years ago

Read 2 more answers

2.3.2: Michael Myers predicts that SAT scores predict college graduation rates in a linear fashion. U of M has an average SAT of

AleksAgata [21]

Answer:

$y = \frac{5000r}{3} -50$

Step-by-step explanation:

Represent the SAT score with y and the rate with r.

So, we have:

$(r_1,y_1) = (90\%,1450)$

$(r_2,y_2) = (69.6\%,1110)$

Required

Determine the equation in slope intercept form

First, we calculate the slope

$m =\frac{y_2 - y_1}{r_2 - r_1}$

This gives:

$m =\frac{1110 - 1450}{69.6\% - 90\%}$

$m =\frac{-340}{-20.4\%}$

Convert percentage to decimal

$m =\frac{-340}{-0.204}$

$m =\frac{340}{0.204}$

Multiply by 1000/1000

$m =\frac{340*1000}{0.204*1000}$

$m =\frac{340000}{204}$

$m = \frac{5000}{3}$

The equation is then calculated as:

$y - y_1 = m(r - r_1)$

This gives:

$y - 1450 = \frac{5000}{3}(r - 90\%)$

Open Bracket

$y - 1450 = \frac{5000r}{3} - \frac{5000}{3}*90\%$

Convert percentage to decimal

$y - 1450 = \frac{5000r}{3} - \frac{5000}{3}*0.90$

$y - 1450 = \frac{5000r}{3} - 5000*0.30$

$y - 1450 = \frac{5000r}{3} - 1500$

Make y the subject

$y = \frac{5000r}{3} - 1500+1450$

$y = \frac{5000r}{3} -50$

3 0

3 years ago

jan work 4 hours on a job and ted worked 5 hours both were paid the same hourly rate together they earned $31.50 how much did ea

TiliK225 [7]

This could by seen as a ratio:
4:5

Add up the ratio. Then divide the money earned, by the ratio.
4 + 5 = 9
31.50 / 9 = 3.5

Then you times the individual hours by this.
4 x 3.5 = $14
5 x 3.5 = $17.5

So Jan earned $14
And Ted earned $17.50

8 0

3 years ago

Jared can choose to go to the

damaskus [11]

The correct answer is letter D

5 0

3 years ago

A driver education course

Kobotan [32]

Answer:

after 4.5 months (or 5)
$795

Step-by-step explanation:

10% of $100 per month is $10 per month.

1. By saving $10 per month on insurance cost, Dan's savings after 4.5 months will be equal to the $45 cost of his course. (If billing is monthly, he won't experience any net gain from the course until the 5th insurance payment--after 5 months.)

2. In 7 years, the savings on insurance costs will total ...

(7 years)×(12 months/year)×($10 /month) = $840

His cost for the course is $45, so his net saving is ...

$840 -45 = $795 . . . net saving by age 25

8 0

3 years ago