Which of these are a function?

A. (4,5) (4,6) (2,7)

B. (2,1) (3,2) (9,1)

C. (3,4) (4,3) (3,3)

D. (1,2) (5,6) (4,6)

How to solve proportional relationships word problems?

The quadratic function f (x) = - 45x ^ 2 + 350x + 1.590mo models the population of a city, where x is the number of years after 2005 and f (x) the population of the city in thousands of people. What the estimated population of the city in 2015?

Convert 120 degrees to radians in terms of pi.

Consider the following system of equations. y = 2x - 2 y - 2x = 9 What can you conclude about the system of equations?

The length of a rectangle is eight more than twice it's width, the perimeter is 96 feet. what are the dimensions of the rectangle?

1. a single standard number cube is rolled, what is the probability of getting 4 or 5? A. 1 B. 1/5 C. 1/3 D. 1/6

for a field trip 11 students rode in cars and the rest filled eight buses. how mamy students were in each bus if 315 students were on the trip

The ordered pairs (1,6), (2,12), (3,18), (4,24) and (5,30) represent a function. what is a rule that represents this function? y=6x y = (x+6) ^2 y=x^6 y=6x

Passengers usually start to board their flights 1 hour before the scheduled take off time. The gate will be closed 15 minutes before the takeoff time. Jack's plane is scheduled to take off at 12:05 a. m. If he arrives at the gate at 11:45 p. m.

Is 88y-40 equivalent to 11y - 5