4 Jenna is planning to buy a new phone. She earned $168 one week and $325 the next
week. The phone that Jenna plans to buy is $196.50 after taxes. If Jenna uses the
money she earned within those two weeks, how much would she have after
purchasing the phone?
A $296.50
B$493
C) $689.50
D) $323.50

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

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?