Hope and tristan both worked hard over the summer. together, they earned a total of $345. hope earned $35 more than tristan. how much did each of them earn? a. write a system of two equations with two variables to model this problem. b. use substitution to solve the system. c. graph both equations.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Find all the angles that satisfy the equation cos(θ)=32

|y + 2| > 6 {y|y < -8 or y > 4} {y|y < -6 or y > 6} {y|y < -4 or y > 4}