Pc solutions sells regular keyboards for $84 and wireless keyboards for $105. last week the store sold 3 times as many regular keyboards as wireless. if total keyboard sales were $4998, how many of each type were sold?

wireless keyboard sold = x

regular keyboard sold = 3x

105x + 84(3x) = 4998

105x + 252x = 4998

357x - 4998

x = 14 < Number of wireless keyboard

3x = 3(14) = 42 < Number of regular keyboard

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!