The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?
x2 + x = 42
x2 + 2x = 42
x²+x+42=0
x² + 2x + 42=0

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.

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.