Answer:
The answer is B.
Step-by-step explanation:
You have to substitute y = -1 into the expression :
[tex]5 {y}^{2} - 3y - 7[/tex]
[tex]let \: y = - 1[/tex]
[tex]5 {( - 1)}^{2} - 3( - 1) - 7[/tex]
[tex] = 5 + 3 - 7[/tex]
[tex] = 8 - 7[/tex]
[tex] = 1[/tex]
