The seventh grade enrollment at Goddard, increased from 380 to 456 students. What is the percent of increase?

20%

Step-by-step explanation:

Calculate percentage change

from V1 = 380 to V2 = 456

(V2−V1)|V1|×100

=(456−380)|380|×100

=76380×100

=0.2×100

=20%change

=20%increase

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14