What is the first step in writing f(x) = 6x2 + 5 – 42x in vertex form?

factor 6 out of each term.
factor 6 out of the first two terms.
write the function in standard form.
write the trinomial as a binomial squared.

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!