Answer:
answer = 4 as formula is 2a+1/2a
Step-by-step explanation: formula is 2a +1/2 a we plug in a=4 2(4) + 1/2(4) = 8+2 = 10 we plug in show all is true 2(6) 1/2(6) = 12+3 = 15 and the third measure given 2(2) 1/2(2) = 4+1 = 5 so all are true to the formula the inverse is a divide by 2 1/2 to find ? = 10/2 1/2 = 4 and 15/ 2 1/2 = 6 and 5 /2 1/2 = 2
