Write the expression. Then, check all that apply. Four times a number increased by seven

A 2-column table with 5 rows. Column 1 is labeled Key words with entries four, times, a number, increased by, seven. Column 2 is labeled Replace with entries 4, x, n, + , 7.

Replace “a number” with the variable, n.

The two operations are multiplication and addition.

The two operations are multiplication and subtraction.

The expression is written as 4n + 7.

The expression is written as 4n – 7.

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?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.