HELP ME PLEASE, I need help check the picture and if its right i will mark brainliest

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years