If sin 0 = 4/5 then what is cos(90-0) need answer in fraction

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).

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?

Math question.. plz me .. best answer all