A parking lot used to hold 325 vehicles. The owner increased the lot's capacity to now hold 455 vehicles. Which fraction represents the increase
in the number of parking spaces?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.