In order to express the function y=34x+7, as a composition of two functions the outer of which is an exponential function,

we would let u be equal to the inner function, u=
and then write y as a function of u, as follows: y=

(b) In order to express the function P=19t8−3‾‾‾‾‾‾‾‾√, as a composition of two functions the outer of which is a root function,
we would let u be equal to the inner function, u=
and then write P as a function of u, as follows: P=

(c) In order to express the function w=−2ln(−5r+2) as a composition of two functions the outer of which is a logarithmic function,
we would let u be equal to the inner function, u=
and then write w as a function of u, as follows: w

a) y=34u+7

b) P=19u8−3√
c) w=−2ln(u)