Mason was ordering the following rational numbers in math class: -3.3, -15, -8 8/9 order of the numbers from least to greatest

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

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).