The vertex of a quadratic function is (6, 2), and the y-intercept of the function is (0, -70). The equation of the function in vertex form, fx)=a(x-h' +k, is shown.
What is the value of a?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?