What is negative 17 over 40 as a decimal?

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb