If 90 is 80% of a value, what is that value?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Given that abcd is a rhombus, what is the value of x?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?