What is the first step when solving present or loan amortization using a formula? \( \begin{array}{ll}\text { a. decide what the monthly payment will be } & \text { c. determine the periods in the problem, which } \\ \text { b. apply the present amortization formula to } & \text { d. determine the interest rate in the problem } \\ \text { determine the balance }\end{array} \)

3) \( h(x)=-x^{2} \)

\( \left\{\begin{array}{l}\left\{5 x^{5} \text { ถ้า } 4 x^{4}+28 x^{2}+49=\left(a x^{2}+b\right)\right. \\ \text { แล้ว } a+b \text { มีค่าเท่ากับข้อใด } \\ \text { ก. } 6 \text { ข. } 7 \text { ค. } 8\end{array}\right. \)

5 bridesmaids want to make 325 decorations for a wedding. Each decoration takes about \( 2 \frac{1}{2} \) minutes to make. Which response gives the best estimate for the amount of time each bridesmaid will spend making decorations?

Use the distributive property to remove the parentheses. \[ (w+11) 8 \]

a. The mean number of radioactive atoms that decay per day is 72.545 . (Round to three decimal places as needed.) b. The probability that on a given day, 51 radioactive atoms decayed, is (Round to six decimal places as needed.)