On Monday, five friends: Jamie, Susie, Sissy, Sandy, and Tiffany all put their money together for a United Way donation. Together they gave fifteen dollars and nine cents. Sissy gave
twice as much as Susie. Susie gave ten cents more than twice as much as Sandy. Tiffany
gave thirty cents less than Sandy while Jamie gave seventy-five cents less than four times
what Sandy put in.
How much money did each person contribute?

15 because you need 20 for susie

Step-by-step explanation:

because

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204