Megan’s tv had a base price of $189 and the sales tax was 6.88%. over the next four years, the tv consumed an average of $0.06 of electricity every day. it also needed repairs twice, costing $29 each time. after four years, megan got a new tv. what was the lifetime cost of megan’s tv? (remember that one in every four years is a leap year.)

a.
$357.68
b.
$318.66
c.
$347.66
d.
$351.65

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?