With the substitution method, explain how you find the value of the second variable once you have determined the value of one of the variables

Can (2,3 and square root 10) be sides ona right triangle?

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).

Rewrite the following quadratic functions in intercept or factored form. show your work. y = x^2 + 7x + 10