Hummingbird can reach a speed of 40 miles per hour what is the speed in feet per second

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

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

Find the perimeter of the triangle with vertices  d(3, 4),  e(8, 7), and  f(5, 9). do not round before calculating the perimeter. after calculating the perimeter, round your answer to the nearest tenth.