Andrew earns an allowance of $14 the first week, $17 the next week, $20 the following week, and so on.How much will Andrew earn over the course of 10 weeks?

Hey there!

First, we need to find out the pattern here:

The allowance keeps adding up by the number 3 (14 + 3 = 17, 17 + 3 = 20)
Now let's just keep adding 3:

Week 1 - $14
Week 2 - $17
Week 3 - $20
Week 4 - $23
Week 5 - $26
Week 6 - $29
Week 7 - $32
Week 8 - $35
Week 9 - $38
Week 10 - $41

Add up the weeks . . .

14 + 17 = 31
31 + 20 = 51
51 + 23 = 74
74 + 26 = 100
100 + 29 = 129
129 + 32 = 161
161 + 35 = 196
196 + 38 = 234
234 + 41 = 275

Your final answer is 275. Andrew will earn $275 over the course of 10 weeks.

Hope this helps you.
Have a great day!