1.) which functions are linear? i. y=x^2ii. y=-x^2iii. y=2x+1iv. y=-1/3x+122.) what is the x-intercept of the equation shown below? y=3x+5a.) (0,5)b.) (-5/3,0)c.) (3,0)d.) (0,-3/5)3.) which of the following is a function? i. x^2+y^2=1ii. y=x^2iii. y=4x-10iv. 1/2y=3x

the answer to the expression is 83

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.