Is the hypergeometric function ${}_1F_2\bigl(1;a,a+\frac12;x\bigr)$ for $a>2$ and $x<0$ an elementary function?

Is the generalized hypergeometric function ${}_1F_2\bigl(1;a,a+\frac12;-x^2\bigr)$ for $a>-1$ and $x>0$ an elementary function?

How about the positivity, monotonicity, and convexity of the generalized hypergeometric function ${}_1F_2\bigl(1; a, a+\frac{1}{2}; -x^2\bigr)$ in $x>0$ for $a\ge-1$?

Is the hypergeometric function ${}_1F_2\bigl(1,a,a+\frac12;x\bigr)$ for $a>2$ and $x<0$ an elementary function?

Is the hypergeometric function ${}_1F_2\bigl(1;a,a+\frac12;x\bigr)$ for $a>2$ and $x<0$ an elementary function?