Marina is 10 years old and has grown 7 inches in 2 years. when she was 8 years old, she was 52 inches tall. marina writes and graphs a function that models her height in inches over time in years. what is the initial value for this function?
a. 59
b. 3.5
c. 7
d. 52

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.