Which expression is equivalent to (0.5x+7)−(1.2x−3)? (0.5x+(−1.2x))+(7+3) (0.5x+1.2x)+(7+(−3)) (0.5x+1.2x)
i have the answer for it. :)

For what is the measure of the angle at the top of the shed? a. multiplication of areas b. squaring of areas c. addition of areas d. division of areas

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68