C(n) = -7 + 6(n - 1)c(n)=−7+6(n−1)c, left parenthesis, n, right parenthesis, equals, minus, 7, plus, 6, left parenthesis, n, minus, 1, right parenthesis Find the 4^\text{th}4 th 4, start superscript, start text, t, h, end text, end superscript term in the sequence.

Factor the trinomial below. 12x^2 - 32x - 12 a. 4(3x+3)(x-1) b. 4(3x+1)(x-3) c. 4(3x+6)(x-2) d. 4(3x+2)(x-6)

Having a hard time understanding this question (see attachment).

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°