Please show working out, I really need help with these questions, (I’ve been trying for ages) I only need to do b and c, I’ve already done a.

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box