Break apart the number you are sustracting. show your work to explain your thinking. 76-29=

Can someone me with my hwplz(only the circled ones)

What is 1/2 x (6 x 4)+3 + 2 show your work

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry