Four a number, increased by one , is between seven and thirteen .

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?