Estimate the sum 13/30 + 2/15 and use the benchmarks 0, ,1/2,1 anyone that gets it right i will give you brainlest answer

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?