When i was 4 years old my sister was half my age now i am 100 how old is she?

Simplify 6sin θsec θ. choices a) 6 tan θ b) 6 cos θ c) 6 cot θ d) 6

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog