Which equation can be used to find the total cost? Question 3 options:

t = 0.05a

t = 0.05 + a

t = 1.05a

t = 2.55 + a

How do i get the answer for 2/3 * 10/3

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

With #! i’ve tried to figure it out but i can’t.