Solve the equation -6 + 4a = 18 for a.

OA) 4

OB) 5

OC) 6

OD 9​

Step-by-step explanation:

-6 + 4a = 18

4a= 24

a=6

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.