Hey guys i rlly need help i don't understand rational numbers

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

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

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression