This is in Differential Calculus. This is only multiple choice. Provide necessary solution for each items. Thank you and Godbless. Follow the numbering.

7. Find y', given x = r + t, y= 31-2. A) Y'= 3 2 C) Y'= + 1 21+ 1 B) y'= 3 D) y'S 21 + 1 12 -1 8. Find y", given x = 213, y=r +4r. 31 612 AV=4 -1 C) V = 31- +4 B) y= 3/2 +4 D) V= 312 -4 167 1613 9. Given x =/', y= 2/ +4/, find the equation of the tangent line to the curve at / = 1. Hint: Find the slope m, then use the point-slope form y-y = m(x-x ). A) &+3y- 10=0 C) & + 3y +10=0 B) & -3p- 10=0 D) & -3y + 10=0