Is x^-5 - 5x^-4 + 4x^-3 - 3x^-2 + 2x^-1 - 1 a polynomial

How to get odd ratios from probit model in mediation analysis in r?

Estimate the sum of 703 and 620

A 16-ounce bottle of Fresh Water is $1.76. A 20-ounce bottle of Spring Water is $2.40. Which statement about the unit prices is true?

Mr. Jones is taking his family to see a play. There are 10 people going to the play, and they take 2 cars. Mr. Jones pays $5.50 for parking for each car. He pays the same price for each ticket. Mr. Jones is charged a total of $142.

Loren and Julie have different part time jobs after school. They are both paid at a constant rate of dollars per hour. The table below show Loren and Julie's total income (amount earned) for working a given amount of time.

Jason has "buy one get one free" tickets to the comedy club. He is bringing 7 people including himself. If the regular price is $10.25 per person, how much change will he have left from $100 bill? A $28.25 B $59.00 C $41.00 D $71.75

A percent is a fraction whose denominator is 100 is it sometimes, always or never

10 (x + 2) = 5 (x + 8)

Greg ran the first leg of a relay in 6.2 seconds. Jeff ran the second leg of the relay in 6.6 seconds. How much time has the relay team run so far?

Ratios - coca cola has 65g sugars total. Equivalent amount of carrots: 1.383 kg or approx 3 lbs. so question asks "Use ratios to determine how many grams of sugar are and 1 kg of carrots". How do I do?