Solve for a.
p + a + r = k

Step-by-step explanation:

sqrt(p+a)=k-r

we raised to the power of 2 both sides

(p+a)=k^2-2kr+r^2

a=k^2+r^2-2kr-p

choice 2

answer: 16

step-by-step explanation: first you would add 6+6 which equals 12 then add 2+2 which equals 4. then add 12 + 4 which is 16.

hope this ^_^

66.666666667%

step-by-step explanation:

divide 150 by 100

divide 100 by 1.5

there you go!

decreased by 33.333333334%