Answer:
51
Step-by-step explanation:
since 1 = 39 degrees, it'd be complementary if you were to open it up if it were a C, it would be 90. So since its this way, i believe you would take 39 and do 90 - 39 to get your answer. Im sorry if this is wrong but i hope it helps you!!
not straight 2,4
the answer is a-11
f(x)=2x+3
f(4)=2(4)+3
f(4)=8+3
f(4)=11
