The model q(t) = 2.5e0.0168t predicts the world population, in billions, t years after 1955. What was the population of the world in 1955 based on this model?

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.