If you burn 10 calories each minute you jog. what integer represents the change in your calories after you jog for 20 minutes

We burn in 20 minute jog = 200 calories.

Step-by-step explanation:

Given : If you burn 10 calories each minute you jog.

To find : What integer represents the change in your calories after you jog for 20 minutes

Solution : We have given

We burn in 1 minute jog = 10 calories .

We burn in 20 minute jog = 20 * 10 calories.

We burn in 20 minute jog = 200 calories.

Therefore, We burn in 20 minute jog = 200 calories.

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places