Hafiz deposited one check into his savings account for $347.90 a second check for $129.00, and a third check, the amount of which he cannot remember. His total deposit was for $825.80 after he received $75.00 in cash. What was the amount of the third check deposited?

Anyone know? will mark brainliest if correct

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11