Due today help me

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.

What is the value of f(x) = 2.2 for f(-2)?

Given: tangent if m 1 = 30° and m = 20°, then m = 10 40 80