If rick buys a remote control car for 28.00 what is his selling price and marks it up 10%

The selling price of remote control car is 30.8  unit

Step-by-step explanation:

Given as :

The cost price (c.p) of remote control car = 28.00

The marks up percentage = 10%

Let the selling price = s.p

So, Marks up % = × 100

Or, 10 % = × 100

Or,   =

∴ s.p = × c.p

  s.p = × 28

So, s.p = 1.1 × 28 = 30.8

Hence The selling price of remote control car is 30.8  unit  Answer

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

hello,

as   long as they add up to 180 its correct.