Answer:
20
Step-by-step explanation:
y^2+4y-1=(-7)^2+4(-7)-1=(-7)(-7)-28-1=49-28-1=21-1=20
0.45+19(0.35)
Total cost $7.10 (0.45+6.65)
16 inch
Whattttttt!!!!!!!!!!!!!!!!!