Write the expression as a polynomial in standard form

5x+4x^2(2x+7)-6x^2-9x

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25

(30 points). the population of a city is 45,000 and decreases 2% each year. if the trend continues, what will the population be aer 15 yrs