Manoj and shira asked to find an explicit formula for the sequence -9, -27, -81, -

manoj said the formula is h(n) = -9*3^n, and

shira the formula is h(n) =-3*3^n. which one of them is right?

a. only manoj

b. only shira

c. both manoj and shira

d. neither manoj nor shira

What are the solutions of the equation? 5z^2 + 9z - 2 = 0 a. 1, -2 b. 1, 2 c. 1/5, -2 d. 1/5, 2

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Which strategy is used by public health to reduce the incidence of food poisoning?