\( 0^{3}+5 \cdot 10^{2}+0 \cdot 10+3 \), este scrierea in baza 10 a cifrei: \( \begin{array}{llll}\text { a) } 853 & \text { b) } 8503 & \text { c) } 8305 & \text { d) } 83\end{array} \)

Determine o primeiro termo da PA na qual \( \mathrm{a} 11=10 \) e \( \mathrm{r}=-1 / 3 \).

A problem requires finding the number of cars on a dealer's lot. Which would not be a reasonable answer? Justify your response. \( \begin{array}{lll}\text { A. } 0 & \text { B. } 6 & \text { C. } 1 \\ \text { D. } 6 \frac{1}{2}\end{array} \) A. 0 ; there cannot be a zero number of cars. B. 6 ; there cannot be an even number of cars. C. 1 ; there cannot be an odd number of cars. D. \( 6 \frac{1}{2} \); there cannot be a fractional number of cars.

Heather is building a model volcano for the science fair. To find the right ratio, she starts by mixing small amounts of baking soda and vinegar. She finds that adding 1.5 teaspoons of baking soda for every fluid ounce of vinegar produces the best eruption. If Heather plans to use 0.5 cups of vinegar for her project, how many tablespoons of baking soda should she use? Hint: There are 3 teaspoons in 1 tablespoon. There are 8 fluid ounces in 1 cup. Write your answer as a whole number, decimal, or simplified fraction. Do not round.

4. Grandma's cookie recipe calls for \( 1 / 2 \) oup of oatmeal for every \( 3 / 4 \) cup of flour. How much flour will Grandma need if she uses 2 cups of oatmeal?

Determine a razão de uma PA que tem a1= \( =-8 \) e a17=16.