Nolan did the following work to solve the problem -14.52 + 7.3. 14.52 - 7.3 7.22 so, 14.52 - 7.3 = 7.22 which of the statements is true about his work and answer? his answer is correct. his answer is incorrect, because the answer should be negative. his answer is incorrect, because he didn't line up the decimals.

His answer is incorrect, because the answer should be negative. :)

Step-by-step explanation:

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

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.