If a certain number is multiplied by five, the result is the same as twenty-one plus twice the original number. what is the value of the original number?

15 point ! ~ see if you know the answer to both you!

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

Which equation represents the function on the graph?