Y is equal to 6 less than the product of x and -1.if the output is -15 what is the input

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

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?