Elena and Jada were racing on their bikes Elena started 15 meters ahead of Jada Elena biked at a rate of 20 meters per second. Jada biked at a rate of 22 meters per second Let x represent time in seconds and y represent distance in meters. Match each number with what it would represent if this system was
graphed.

HELP PLEASE

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 is the number 321,000,000 in scientific notation? also what is the number? ?

What is the ratio fraction form of 25: 9