Find f(-1) for the following equation: f(x) = -x + 5x
a. -4
b. 6
c. -6
d. 4
e. 0

a. -4

Step-by-step explanation:

plug in -1 into the x.

it will look like this: f(-1)= 1+5(-1)

solve.

1-5 is -4

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐

the answer is a

step-by-step explanation: