samantha is doing chores at home. she can vacuuma room for $2 or wash and fold a load of laundary for $3. one month she accomplished 25 chores and earned a total of $64. Write a system of equations to model the situatio, and then determine how many of each type of chore she did that month.

this is answer of 144 cubic meters

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

there is no answer sorry!

step-by-step explanation: