Which one describes the algebraic expression for the phrase, "the sum of a number and its square"? n + n2
n + 2
2n
n + 2n

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.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Negative 5 1/12 + negative 4 1/4 + 6 3/4