5. Consider two possible improvements that can be used to enhance a machine. You can either make multiply instructions run two times faster than before, or make memory access instructions run four times faster than before. You repeatedly run a program that takes 100 seconds to execute. Of this time, 30% is used for multiplication, 40% for memory access instructions, and 30% for other tasks. a. What will the speedup be if you improve only multiplication? [5%] b. What will the speedup be if you improve only memory access? [5%] c. What will the speedup be if both improvements are made? [5%]