A function is expressed by the formula y = 2x + 7. Find the value of y if x is equal to 1; -20; 43.

when x = 1 then y = 9

when x = -20 then y = -33

when x = 43 then y = 93

Step-by-step explanation:

Just replace the given values of x ( which are 1 , -20 , 43 ) in the function

Leticia invests $200 at 5% interest. If y represents the amount of money after x time periods, which describes the graph of the exponential function relating time and money?

The initial value of the graph is 200. The graph increases by a factor of 1.05 per 1 unit increase in time.

The initial value of the graph is 200. The graph increases by a factor of 5 per 1 unit increase in time.

The initial value of the graph is 500. The graph increases by a factor of 2 per 1 unit increase in time.

The initial value of the graph is 500. The graph increases by a factor of 1.02 per 1 unit increase in time.