26 A salesperson's total earnings consist of a base salary of \( x \) dollars per year, plus commission earnings of \( 11 \% \) of the total sales the salesperson makes during the year. This year, the salesperson has a goal for the total earnings to be at least 3 times and at most 4 times the base salary. Which of the following inequalities represents all possible values of total sales \( s \), in dollars, the salesperson can make this year in order to meet that goal? A) \( 2 x \leq s \leq 3 x \) B) \( \frac{2}{0.11} x \leq s \leq \frac{3}{0.11} x \) C) \( 3 x \leq s \leq 4 x \) D) \( \frac{3}{0.11} x \leq s \leq \frac{4}{0.11} x \)

Dado um triângulo ABC em que o ângulo A mede 50 graus, o lado oposto (lado BC) tem comprimento de 8 cm, e o ângulo B mede 70 graus. Utilizando o critério ASA, prove se este triângulo é congruente com outro triângulo DEF, onde o ângulo D também mede 50 graus e o lado oposto (lado EF) mede 8 cm.

a) \( \left\{\begin{array}{l}a_{1}=1 \\ a_{n+1}=2 a_{n}+1, \text { si } n \geq 1\end{array}\right. \)

14. The amount of an invoice from Cloverdale Creamery is \( \$ 1780 \) with terms of \( 2 / 10,1 / 15 \), net 30 with shipping charges of \( \$ 120.39 \). The invoice is dated March 8 . (a) What amount should be paid on March 20 ? (b) What amount should be paid on April 3? [7.3]

For the pair of variables, decide whether there is a very weak or no relationship, a strong relationship that is not a causal relationship, or a causal relationship. Variables: amount of gas used on a trip and number of miles driven on the trip. Not enough information has been provided to make a determination A causal relationship A strong relationship that is not a causal relationship A verv weak or no relationshin

15. Persamaan garis yang sejajar dengan \( x+y-2=0 \) dan melalui titi \( (-5,0) \) adalah...