The ratio of Roger's age to his son's age is 7:3. If the sum of their ages is 60, then how old is Roger's son? A. 17 years old
B. 18 years old
C. 19 years old
D. 20 years old
E. 21 years old

Which equation represents the partial sum of the geometric series?

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

How do i do this? i don’t understand