find the equation of the parabola with vertex at the origin that passes through the point (-4,-2) and opens to the left

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.