3a + b = 54
Substitute b for 9
3a + 9 = 54
Subtract 9 to both sides
3a = 45
Divide 3 to both sides
a = 15
<span>c)1 + 2cot^2x + 2cscx cotx
because cosc^2x=1+cot^2x</span>
X is 16x your welcome boo
Answer:
Yes
Step-by-step explanation:
Each value only maps out to one value, so that means it is a function.