Write an equation in point-slope form of the line that passes through the given points, then write the equation in slope-intercept form. (-9,7). (9.1)

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?