Which of the following situations represents a proportional relationship?
a. a cheeseburger is $7.95 plus $ 1.00 for each additional topping.
b. a pool fills at a rate of 90 gallons per hour.
c. a health club charges a $40.00 membership fee plus $25.00 per month
d. a bank account begins with $350.00 and gains $30.00 per month.

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.