Sarah's parents purchased a refrigerator for $320. If sales tax is 7% of the cost, how much tax did Sarah's parents pay for the refrigerator?

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Find the value of x for which line a is parallel to line b

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)