Answer:
9
Step-by-step explanation:
k=-9
-9×-9
81 square rooted
5.) 39
6.) 52
5.) 90-51= 39
6.) 74 + 34= 108
180-108= 72
56+72= 128
180-128= 52
x=52
the answer is a-11
f(x)=2x+3
f(4)=2(4)+3
f(4)=8+3
f(4)=11
