What exclusions are placed on the variable a for the fraction (a^2 + 4m)/a^2+4? a -2 b. 0 c. none notice: the parenthesis around a^2m+4m is there to show that the whole equation is being divided by a^2+4

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

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.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply