The graph represents the cost of a medical treatment, in dollar, as a function of time, d, in decades since 1978. Find the cost of the treatment, in dollars, when d=1

Abit confused about what you mean, but i think you might be referring to slope intercept form: y = mx + bin that case b, or the y intercept is already given.(0,-1)find the slope by using the formulay2 - y1/x2 - x1the final slope will be 4/2, equivalent to 2.now your equation should look like thisy = 4/2x -1sorry if this didn’t you out!

than do 23.50 times 18 and then divide your answer by 100 than you will get x.

The sum is 2,160, no problem