Answer:
Julie can buy 9 gift cards and will have 79 reward points left over
Explanation:
If you divide 1,429 by 150, the number before the decimal, 9, is how many she can buy without exceeding her limit
Then, multiply 9 and 150 to see how many points 9 gift cards is worth (1350)
Subtract 1429-1350 to find the leftover points (79)