15. Mr. Otten saved $32 each week for 26 weeks. How
much did he save in that time?

$612

Step-by-step explanation:

to solve, you want to multiply these two values.

You can make this easier by taking the tens place of both numbers out and the ones place out and multiplying them:

32 x 26

30 x 20 = 600

2 x 6 = 12

Then add these values together:

600 + 12 = 612

answer:      

step-by-step explanation:

sounds & other waves originate from any vibrating object