Respuesta :
Answer:
42.3
Step-by-step explanation:
the expression we have is:
[tex]3.6x+4.5y[/tex]
and we need to evaluate this when
[tex]x=3[/tex]
and
[tex]y=7[/tex]
to evaluate the expression means that we have to plug in the values for x, and y into the original expression and solve.
So we substitute the values for x and y:
[tex]3.6(3)+4.5(7)[/tex]
and solving the multiplications:
[tex]10.8+31.5[/tex]
finally, doing the sum we get:
[tex]42.3[/tex]
