Answer:
First, let's find out the sum;
1.30 + 1.25 = 2.55, is rational, so A
Step-by-step explanation:
The reason being this is because, 2.55 is a terminating decimal meaning that the decimal place does not go on forever.
Answer:
Step-by-step explanation:
An negative exponent seems hard, but it really isn't!
Let's say you have 
All you do is inverse the expression, or find the reciprocal. When you do this the exponent changes to positive .

simplifies into 8. So, the result is

Hope this helps! Please mark as brainliest, thanks!
Written as an inequality- x+18<28