If f(x)= 2x, find f(-3) please help, I'm so confused ;-;

The Vista Marina rents boats for 25$ per hour. In addition to the rental fee, there is a 12$ charge for fuel. Is the number of h

ser-zykov [4K]

Answer:

No, the total numbers of hours you can rent the boat is not proportional to the total cost.

Step-by-step explanation:

Proportional means when two or more pairs of numbers are at a common ratio. This means when you divide the numbers that correspond to each other from each pair, the quotient is the same.

Ex: (1,2) and (4,8) are proportional.

1 corresponds with 4. 1/4 = 0.25

2 corresponds with 8. 2/8 = 0.25 Same quotients, common ratio is 0.25.

Solving the problem:

Fill in the table using random hours, then check if the pairs are proportional.

According to the problem, you pay $25/h and there is also a flat fee of $12 (money you will pay despite rental time). This means the money you pay is : ($25 X Rental Time) + $12

Choose three random numbers for "Rental Time". Use the equation for each rental time to find the "Cost ($)".

When Rental Time (h) = 1:

($25 X Rental Time) + $12

= ($25 X 1h) + $12

= $37

When Rental Time (h) = 2:

($25 X Rental Time) + $12

= ($25 X 2h) + $12

= $62

When Rental Time (h) = 3:

($25 X Rental Time) + $12

= ($25 X 3h) + $12

= $87

Fill in the table:

Rental Time (h) 1 2 3

Cost ($) 37 62 87

The pairs are (1, 37), (2, 62) and (3, 87).

Choose two and check if they are proportionate.

1 corresponds with 2. 1/2 = 0.5

37 corresponds with 62. 37/62 = 0.59677.... Different quotient. There is no common ratio.

Since there is no common ratio, the number of hours yo can rent the boat is not proportional to the total cost.

8 0

3 years ago

The driving distance from Chicago to San Francisco is 2,142 miles. The Hathaway family left Chicago on Monday morning, December

Mekhanik [1.2K]

Answer:

They arrive on Monday, December 13th

Step-by-step explanation:

First, we know that this family must drive a total of 2,142 miles.

They average 50 miles per hour and drive 6 hours each day, thus we can see that they drive (50)(6)=300 miles per day.

Now, to know how many days it will take them to drive the total of 2,142 miles we are going to divide the total amount of miles between the number of miles driven per day:

2,142÷300= 7.14

Thus, it takes them 7.14 days to drive 2,142 miles.

If we round this (since the number is greater than 7 this would mean it takes them more than 7 days and they would stop at 7 for the day) to the next digit, we would have that it will take them 8 days to get to San Francisco.

Thus, since they start on December 6th (day 1), December 7th would be day 2 and following this pattern we would have that the eighth day would be December 13th.

Now, since the days repeat every 7 days and we now that December 6th was monday, we would have that the day they arrive to San Francisco (December 13th) is monday too.

4 0

3 years ago

Please help me with this

Advocard [28]

Answer:

the new phone is it a lot of the time it A lot and it A present it A lot more and the more it A present and it will help you also find your own business in India or phir and it will help to pta chal to pta in India you also have been offered the ab ja for the best deals for the year to pta in your area of this

7 0

3 years ago

The value of y is directly proportional to the value of x. When x=3.5, the value of y is 14. What is the value of y when x = 28?

inna [77]

Answer:

x = 7

Step-by-step explanation:

y = 14

14 x 2 = 28

Therefore:

3.5 x 2 = 7

7 0

3 years ago

Explain relationship between how radical expressions and rational (fractional) exponents

RideAnS [48]

Answer:

Any radical in the form can be written using a fractional exponent in the form . The relationship between and works for rational exponents that have a numerator of 1 as well. For example, the radical can also be written as , since any number remains the same value if it is raised to the first power.

Step-by-step explanation:

3 0

3 years ago