Let f(x) = 4x + 5 and g(x) = 3x + 7. Find f(x) + g(x) and state its domain.

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?