A rock is tossed off a balcony. Its height (in feet) is given by the formula h(t) = 16t^2 + 12.6t + 90, where t is measured in seconds How long will it take the rock to hit the ground? Round your answers to three decimal places. seconds​

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

Based on the figures as marked, /\rqs = —

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?