You need to write an inequality.
10 ≥3x
x represents pounds, and each pound costs $3
solve the inequality
10 ≥3x
divide both sides by 3 by 3 to isolate the x. you have to do whatever you do to the left side to the right)
you get 3.3=x
she can buy 3.3 pounds
(I HAD THE SAME WORKSHEET AS YOU)