H(a)=-2a + 3
g(a)= 2a + 1
Find h(a) + g(a)

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

What is the y intercept of f(x)=(1/2)^x?

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?