How many solutions does the system have?

no solutions. if you make the equations equal to each other and then solve, the variables are cancelled out, so there is no answer

a negative exponent is translated as follows:

so, we have

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !