PLEASE ANSWER !!! Write an equation to determine any number of feet you must dig given the number of years

Y=4x^2+x-1 solve using quadratic formula

What is the probability of rolling a single die greater than 4

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191