Joesphine scored 95, 84, and 87 on three math tests. She wants her average score for 5 tests to be at least 90.
Part A: What are two possible test grades she could get to reach her goal? Justify your reasoning.
Part B: What are the two lowest grades she could get and still get at least a 90 average? Prove your result.
I am very confused. Please help...

Which expression is equivalent to sq-80

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.