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Vikentia [17]
3 years ago
7

Each month, a phone company charges $20 for 500 minutes of talk time plus $0.45 for each additional minute. Unlimited texting co

sts $30 more. Choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500 plzz help will give brainliest plzz and thank u
Mathematics
1 answer:
slavikrds [6]3 years ago
8 0

Answer:

Hello there! I hope your having a good day. I'm not exactly sure about this answer: 50o=30 u+(20m+.45a)

Step-by-step explanation:

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PLZ HElp!! Solve the inequality. –6 < 2x – 4 < 4
nekit [7.7K]

Answer:

- 1 < x < 4

Step-by-step explanation:

- 6 < 2x - 4 < 4 \\  - 6 + 4 < 2x < 4 + 4 \\  - 2 < 2x < 8 \\  \frac{ - 2}{2}  < x <  \frac{8}{2}  \\  \purple{ \boxed{ \bold{ - 1 < x < 4}}}

6 0
3 years ago
2. The number of atoms of a particular chemical element is modelled by
____ [38]

9514 1404 393

Answer:

  a) 600

  b) see below

  c) 1.26 hours

Step-by-step explanation:

a) The value of y when x=0 is the coefficient of the exponential term:

  y = 600·3^(-0) = 600·1 = 600

There were 600 atoms to start.

__

b) see attached for a graph

__

c) The graph shows 150 atoms at t = 1.26, about 1.26 hours after the start of time counting.

If you want to find that value algebraically, substitute for y and solve for x. Logarithms are involved.

  150 = 600·3^(-x)

  150/600 = 3^(-x)

  log(1/4) = -x·log(3)

  x = -log(1/4)/log(3) = log(4)/log(3) ≈ 1.2618595

After about 1.26 hours, there were 150 atoms.

6 0
3 years ago
Max has more than 5 carrots (number of carrots Max has = c) ​
Ainat [17]

Answer:

The right answer is five

4 0
2 years ago
What is 7/10 divided by 12 simplified
defon

Answer:

7 /120

Step-by-step explanation:

7/10 ÷ 12

Copy dot flip

7/10 * 1/12

7 /120

4 0
3 years ago
Read 2 more answers
Clayton drove at a constant rate on the highway for a trip to the beach. He did not make any stops along the way. The distance C
Nikolay [14]

The answer is the first 1 !!

Here is how we see if it is true!

If Clayton drives 60 miles per hour, that means, <u>t</u>hat after one hour has passed, they should have traveled 60 miles!

If we look at the number of hours that have passed between 1:30 and 4:30, it is 3 hours.

If someone travels 60 miles every hour that has passed, and they traveled for 3 hours. To find how far they have traveled we just need to multiply 60 miles by 3 hours!

Let's solve that!

60 × 3 = 180 miles!

Clayton started driving at 1:30 pm and went 60 miles per hour.

3 0
2 years ago
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