In which of the following expressions is the coefficient of term "x" 1? 2x2−3x+12 x squared minus 3 x plus 1

3x2−x−53 x squared minus x minus 5

2x2+x−92 x squared plus x minus 9

x2+2x+7

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.