A boy rides away from home in an automobile at the rate of 28 km/h and walks back at the rate of 4 km/h. The round trip is x km. Write and simplify an expression that will represent the total time, in hours, the boy travelled. (distance=speed *time)

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

Asap describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x). f(x)=-5.8sin x. g(x)=sin x. a: vertical stretch by a factor of 5.8, reflection across y-axis. b: vertical stretch by a factor of 5.8,reflection across x-axis. c: horizontal stretch by a factor of 5.8, reflection across x-axis. d: horizontal stretch by a factor of 5.8 reflection across y-axis.

Negative 5 1/12 + negative 4 1/4 + 6 3/4