What is a simpler form of the following expressions?

(j + 7) (j - 7)

a. j² + 14j - 49

b. j² - 14j - 49

c. j² + 14j - 49

d. j² - 49

Identify the polygon using as many names as possible

How long it takes to ride around the world with 60km/h speed?

2017 hyundai tucson 2.0 oil type and capacity

A taxi service charges you $1.50 plus $0.60 per minute for a trip to the airport. The distance to the airport is 10 miles, and tge total charge is $13.50. How many minutes did the ride to the airport take?

Maggie want to buy several display boxes that hold 8 rocks each. She has $35 to spend. How many display boxes can she buy? Write a division fact that shows how you found your answer.

Assume running consumes 108 calories per mile. If you run 11 - minute mile what is your average power output, in watts, during a 2-hour run?

You find that your watch gain 2 minutes in 6 hours. how will it gain in 3 days?

A car traveled 27.5 miles in 30 minutes how many miles per hour was it travel

In a marketing class of 60 students, the mean and the standard deviation of scores was 70 and 5, respectively. Use Chebyshev's theorem to determine the number of students who scored less than 60 or more than 80.

A store sells a television for $1000. Customers can choose to receive a 10% discount and pay it off with a loan at a simple interest rate of 4%, or they can choose to pay full price and pay it off in 3 years with no interest.