L1 : (-3, -5) and (-1, 2) l2: (0,4) and (7,2) a. parallel b. neither c. perpendicular

C. Perpendicular

Step-by-step explanation:

L1 :

let  A(-3,-5)    B(-1,2)

the slope is :   (YB - YA)/(XB -XA)

(2+5)/(-1+3)  = 7/2=  

the slope is : 7/2

L2 :

let  C(0,4)    D(7,2)

the slope is :   (YD - YC)/(XD -XC)

(2-4)/(7-0)  = -2/7  

the slope is : -2/7

(7/2)×(-2/7) =-1

Perpendicular

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2