What is the answer 38 + 7k = 8(k + 4) pls give me an answer not a link so pls this is the last of my points

The answer is k = 6!
The work is provided in the image below;

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.