I need the answer and the work shown|4b-5|=19

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 4x^2 - 19x- 5

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?