Does this work when you have to add dollars and cents; $45.50 + $63.70?
What do you think?

Hey There!

I am not entirely sure of what your question is asking, but the solution to the given expression is; $109.20

Steps:

First you add the cents of the expression;

.70 + .50 = 1.20 / A dollar and 20 cents

Then you add the dollar amounts;

63 + 45 = 108 / 180 dollars

Finally you add the two groups together.

108 + 1.20 = 109.20 / 109 dollars and 20 cents.

Hope I helped, Five Stars & Brainliest is always appreciated!

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