book Maths Puzzle Numerical Ability

If f(x)=3x^2-2 find f^(-1)

Read Solution (Total 0)

book Other Question

12h+5h MR.SELL BOUGHT THREE DOGHNUTS AND A 44-OUNCE THERMAL CUP OF COFFE ONHIS WAY TO SCHOOL. IF THE COFFE COST WAS $1.95 AND THE TOTAL OF HIS PURCHASE [BEFOERE TAX] WAS $3.60, HOW MUCH DID EACH DOUGHNUT COST?