How to write the equation for this math problem. sandy made 98 on her first test.87 on her second test. and 89 on her third test. what is her average test grade?

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

Which is a graph of a proportional relationship?

What else equals 42 and 30 for multiply