Solve for W 7w-4-3w=24

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

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?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"