I have two questions. On Monday at 1 p. m., when the ocean's surface was at an elevation of 2.2 feet, Winston went to a surf shop that was 8.2 feet above the ocean surface. At 7 p. m. when the ocean's surface with an elevation of -2.4 feet, Winston ate dinner at a restaurant whose deck was 10 ft above the ocean surface. How many feet apart are the two ocean elevations. What is the elevation of the deck where Winston ate dinner

q: 92 degrees

hope i ^-^

answer: i think one of the answer is $150 and $300?

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