HELP ASAP At high tide the water level at a particular boat dock is 9 feet deep. At low tide the water is 3 feet deep.
On a certain day the low tide occurs at 3:18 A. M. and high tide occurs at 9:42 A. M. Find an equation for
the height of the tide at time t, where t is the number of hours after midnight. What is the water level
at 2:30 P. M.?

Arrange the steps to solve this system of linear equations in the correct sequence. x + y = -2 2x – 3y = -9 tiles subtract 3x + 3y = -6 (obtained in step 1) from 2x – 3y = -9 (given) to solve for x. substitute the value of x in the first equation (x + y = -2) to get y = 1. the solution for the system of equations is (-3, 1). x = -15 the solution for the system of equations is (-15, 13). add 3x + 3y = -6 (obtained in step 1) to 2x – 3y = -9 (given), and solve for x. x = -3 substitute the value of x in the first equation (x + y = -2) to get y = 13. multiply the first equation by 3: 3(x + y) = 3(-2) 3x + 3y = -6.