Each pencil in the supply store costs $0.12. Which equation represents the relationship between the total number of pencils purchased, p, and the total cost, c = 0.12p
c = p + 0.12
p = 0.12c
p = c + 0.12

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

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

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.