How do i figure out that -7/8 + 5/24 (-5/7 + 1/35) = -57/56 ? i’d like to know the steps to get the answer.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Which graph represents the linear function below? y-3=1/2(x+2)

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )