7. Find the value of c that makes the expression a perfect square trinomial. Then write the expression as the square of
a binomial.
y = x2 - 7x + c

Let r = 3. what is the value of r + 58?

How do i do this activity, is appreciated

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).