What must be true of a linear system for it to have a unique solution? select all that apply.

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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