Find each function value.

1). f(1)if f(x) = x+ 3

2). f (6) if f(x) =2x

3). f(4) if f(x) =5x-4

need with all 3 questions step by step

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

Ineed in figuring out this problem.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x