The system of equations is graphed. Is there a unique solution, no solution or infinite solution? x + y - Z= 3

X + y - z = 5

3x + y - 2z = 5

GRAPH IN PICTURE

A. infinite solution
B. no solution
C. unique solution

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

How do i do this activity, is appreciated