What is the resulting equation when the expression for y in the second equation is substituted into the first equation?

3x + y = 1

y = 6 - 4x

a. 7x + 6 = 1

b. -x + 6 = 1

c. x + 6 = 1

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

This is about circle theorems. someone asap : (

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?