Please help, I will mark brainliest!

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work