Which statement is true about the difference square root of 7 - square root of 28?
a. it is rational and equal to -2.
b. it is rational and equal to 0.
c. it is irrational and equal to -2square root of 7.
d. it is irrational and equal tosquare root of 7.

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Pls yall i really need the answer fr fr