just the first question.
1.)
brenda decides to save her spare change in a jar. the initial amount in the jar, j(0). is $20, and after one week it is (7) = 23.50.

(a) Brenda saved $23.50.

(b) The rate at which Brenda is saving money is 0.5 dollars per day.

(c) money saved on is $27.

Step-by-step explanation:

Given:

Initial amount in the jar is,

Amount in the jar after a week or 7 days is,

Brenda is saving money at a linear rate.

(a)

Now, money at the end of the week is the total money saved by Brenda.

Therefore, total money saved by Brenda is equal to the money saved at the end of the week. So,

Total money saved by Brenda =

(b)

The rate of change of a function is given as:

Here,

Therefore, the rate at which Brenda saves money is given as:

Therefore, the rate at which Brenda is saving money is 0.5 dollars per day.

(c)

A linear function is of the form , where 'm' is the rate and 'b' is the initial value of the function.

Therefore, the linear function for the money saved by Brenda can be written as:

Now, is given by plugging in 14 for 'x' in the above expression. So,

Therefore, money saved on is $27.

fahrenheit

step-by-step explanation:

fahrenheit is more precise than celsius. the ambient temperature on most of the inhabited world ranges from -20 degrees fahrenheit to 110 degrees fahrenheit—a 130-degree range. on the celsius scale, that range is from -28.8 degrees to 43.3 degrees—a 72.1-degree range. this means that you can get a more exact measurement of the air temperature using fahrenheit because it uses almost twice the scale.

14

step-by-step explanation: