Which key feature would you be able to see from the standard form of this parabola y = -2x2 + 6x - 8

What is the equation of this graphed line? enter your answer in slope-intercept form in the box.

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

William invested $5000 in an account that earns 3.8% interest, compounded annually. the formula for compound interest is a(t) = p(1 + i)t. how much did william have in the account after 6 years? (apex)