Which represents the polynomial written in standard form?

8x^2y^2 – 3x^3y/2 + 4x^4 – 7xy^3

–7xy3 + 8x2y2 – 3x^3y/2 + 4x4
4x4 – 7xy3 – 3x^3y/2+ 8x2y2
4x4 + 8x2y2 – 3x^3y/2 -7xy3
–7xy3 – 8x2y2 + 3x^3y/2+ 4x4

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?

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?