Shelly and terrence earned points in a game by completing various tasks. shelly completed x tasks and scored 90 points on each one. the expression below shows terrence's total points in the game: . 90x - 20. what does the constant term of the expression represent? . the total points terrence earned. the total number of tasks terrence completed. the sum of shelly and terrence's total points. the difference between shelly and terrence's total points @rimshaa

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

step-by-step explanation:

gym b charges $1.05 less per hour than gym a.