Question 7 (1 point) Translate the following argument into symbolic form then determine if the argument is valid or invalid by comparing the argument to a standard form or by using a truth table. You must submit your work for proof. If Canada is north of the United States, then Alaska is in Mexico. Canada is north of the United States. Alaska is in Mexico.

n.1 \[ f(x)=x^{4}-27 x^{2}+50 \] Find the zeros of the polynomial function and state the multiplicity of each. The smallest zero is \( \square \) with multiplicity \( \square \). (Type an exact answer, using radicals as needed.)

3. Evalủa las siguientes operaciones utilizando notación cientifica. \( \begin{array}{ll}\text { a. } \frac{(0.090 .00011)(51000000)}{(-0.00000017)(0.000000033)} & \text { f. } \frac{(-0.00000121)(-33000)}{0.000066} \\ \text { b. } \frac{(0.0000060)(-0.000003)}{(0.0000036)(500000)} & \text { g. } \frac{(33000)(-0.000000060)}{600000(0.0000011)} \\ \text { c. } \frac{(540000000)(12500000)}{(-9000000)(60000000)} & \text { h. } \frac{140000(-0.000027)}{0.0021} \\ \text { d. } \frac{(-0.000000064)(-0.000006)}{(-40000000)^{2}(-0.000000048)} & \text { i. } \frac{390000(-0.002)(-0.0005)}{-0.0000026} \\ \text { e. } \frac{(0.0000039)(-20000)(-0.00000010)}{52000000} & \text { j. } \frac{0.00000025(-0.0014)}{0.0000000035}\end{array} \)

Find the zeros of the polynomial function and state the multiplicity of each. \[ f(x)=x^{4}-27 x^{2}+50 \] The smallest zero is -5 with multiplicity 1. (Type an exact answer, using radicals as needed.) The smaller middle zero is \( \square \) with multiplicity \( \square \). (Type an exact answer, using radicals as needed.)

\( 1 \leqslant \quad \) Find the zeros of the polynomial function and state the multiplicity of each. \[ f(x)=\left(x^{2}-4\right)^{3} \] The smaller zero is \( \square \) with multiplicity \( \square \).

What is the greatest number of acute angles a triangle can contain? A. 2 B. 1 C. 3 D. 0