Question

I am having a harder time with this problem, please help me figure it out.
Let r s=rs + s for all integers r and s. What is the value of 4 5? The symbols did not attach, so I will send an attachment.

Answer 1

here is my attachment

Answer 2

so 4 symbol 5 would be = 4(5) + 5 = 25

Answer 3

Wow that was fast.

Answer 4

for these types of questions, just look at what the original example they gave you, and plug into your numbers