Giúp mình dới mình cần gấp dữ lắm please

Combine like terms7y^2 + 7(6y^2 − 8)

John can eat 10 cookies in 1/2 hr how many cookies can he eat in 45 minutes make a proportion and solve

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5