Solve the equation w3 = 1,000

Draw a scaled copy of the circle using a scale factor of 2

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

3x = 729 solve for x plz . it's urgent. will mark