Please help me :( anwser my questions on my profile their easy 7th grade rational numbers etc math

Keisha makes a large sandwich for a family picnic she takes 1/2 of them the sandwich to the picnic her family eats 3/8 of the whole sandwich what fraction of the whole sandwich does keisha bring back from the picnic

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

What does the sign of the slope tell you about a line?