Aline passing through which of the following pairs of coordinates represents a proportional relationship?
a.
(1.3, 3.3) and (2.3, 4.3)
b.
(2.5, 5) and (3, 5.5)
c.
(1.25, 2.25) and (2.5, 5)
d.
(1.25, 2.5) and (3.75, 7.5)

Cumulative examcumulative exam active13time remaining02: 44: 18the graph represents the data cost for monthly internetservice for a cell phone.which function, c(x), represents the monthly cost in dollarsin terms of x, the number of gigabytes used in a month? cell phone internet service(15,5x + 10150,0sx522 < x < 664x115, osx< 25x + 20, 2< x< 650, 65815%,monthly cost (s)20x + 5| 50x,0 < x < 22 < x < 664x( 15x, osx< 2c(x) = 5x + 10, 2< x< 6150x, 65 x5+1234 5 6 7 8 9 10 11 12gigabytes used

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?