Suppose $1,900 is invested in an account at an annual interest rate of 4.6% compounded continuously. How long (to the nearest tenth of a year) will

Suppose $1,900 is invested in an account at an annual interest rate of 4.6% compounded continuously. How long (to the nearest tenth of a year) will it take the investment to double in size? 

 A bowl of soup at 185° F. is placed in a room of constant temperature of 75° F. The temperature T of the soup t minutes after it is placed in the room is given by T(t) = 75 + 110 e – 0.075 t Find the temperature of the soup 12 minutes after it is placed in the room. (Round to the nearest degree.)

 Find the equation for a line which passes through the points (5, 1) and (9, -7). Write the equation in slope-intercept form

A salesperson earns a base salary of $1,560 per month and a commission of 7.8% on the

amount of sales. If the salesperson has a paycheck of $4,368 for one month, what was the

amount of sales for the month? 

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