Assume that $\mathrm{x}$ is a binomial random variable with $\mathrm{n}=140$ and $\mathrm{p}=0.3$. Use a normal approximation to find each of the following probabilities. a. $P(x \leq 31)$ b. $P (39 \leq x \leq 49)$ c. $\mathrm{P}(\mathrm{x} \geq 34)$ SP.PC.057