Solve for x

a: 4
b: 12.5
c: 3
d: 12

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

What number produces an irrational number when multiplied by -1.25

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.