CAN SOMEBODY HELP ME PLEASE THIS IS SO COMPLICATED FOR ME AND I HAVE BEEN STUCK ON THIS FOR A WHILE NOW :((

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Write the equation in logarithmic form 8^x=64

Awindow has the shape of a rectangle with a semi circle at the top. find the approximate area of the window using the dimensions shown. 4ft by 8ft