6. S. ID. B.5 Students were asked to name their favorite sport from a list of basketball, soccer, or tennis. The results are shown in the table
below.
Girls
Boys
Basketball
42
84
Soccer
58
41
Tennis
20
5
What percentage of the students chose soccer as their favorite sport?

The table you provided is kinda hard to read but I'll try to answer this. This question requires three steps.

1) find the total # of students.

2) find how many chose soccer as their favourite sport.

3) divide # of student who chose soccer by the total # of students then multiply by 100.

= 39.6% of students chose soccer as their favourite sport.

*remember, this on the basis that I read the table correctly...

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